Is sojamelk gezond ?



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Waarom deze site ?

In een melkland als Nederland is er nog altijd een groot taboe dat men niet praat over de nadelen van melk/sojamelk voor grote groepen mensen. Met name een hoge consumptie van sojaprodukten en de gevolgen daarvan worden systematisch ontkend.

Natuurgenezers weten maar al te goed wat voor rol zuivel maar ook soja kan spelen maar dit is slechts een kleine groep specialisten die echt iets van voeding weten.

Wetenschappers die zich tegen soja uitspreken worden in de pers belachelijk gemaakt en meestal doodgezwegen. Wat voor de ene mens gezond is kan voor de andere averrechts werken en zijn hele immuunsysteem ondermijnen. Laat je niets aanpraten, ga zelf testen wat de oorzaak van je klachten kan zijn. Weet je eigen arts niets over voeding stap dan eens naar een gespecialiseerde orthomoleculaire arts en lees zoveel mogelijk.

Er zijn goede kritische magazines zoals ortho die niet een verlengstuk van de industrie zijn en gewoon kijken wat de nadelen en voordelen van voeding zijn. Kennis is macht, laat je niets wijsmaken door instanties en verenigingen die samenwerken met de soja-, vlees- of zuivelindustrie. Eet niet op de automatisch piloot, voeding die word gepropagandeerd als gezonde voeding kan bij jou wel eens heel anders uitkijken.

Denk ook eens aan een rotatie dieet waarbij alle soorten voeding aan bod komen en je geen continue overbelasting krijgt van je immuunsysteem krijgt en intoleranties ontwikkeld. De media negeren dit soort problemen systematisch dus lees goede boeken, zoek online, lees kritische magazines en negeer de propaganda van de industrie.

Van alles een beetje geldt ook vandaag de dag nog. Hoe meer variatie, hoe verser en rauwer de produkten, hoe minder chemische toevoegingen des te beter voor je gezondheid.

Heb je eeuwig darmproblemen verdiep je dan eens in de achtergronden van je darmen (zie www.darmproblemen.com) en probeer eens boekweit, roggebrood of speltbrood ipv die eeuwige tarwe. Als je dan toch tarwe eet kies dan eens voor gekiemd tarwebrood (Essener brood), hierbij zijn namelijk de gluten al omgebouwd naar aminozuren en in het mineraal blokkerende fytinezuur ook al afgebroken door het kiemen, net zoals bij zuurdesem brood.

Succes met je zoektocht naar een betere gezondheid. Een goede hulp daarbij kun je vinden op deze Amerikaanse site:

http://www.dadamo.com/typebase4/typeindexer.htm

Mvg
Ron Fonteine

 


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Soja gevaren - Prison Press Conference Chicago, Illinois

Sally Fallon Morell, President of the Weston A. Price Foundation, GMO expert Jeffrey Smith, Attorney Gary Cox and former inmate Thomas Salonis in Chicago, Illinois on November 12, 2009 discussing the WAPF case against soy diet of inmates in the Illinois prison system.

Link


Sojamelk en effecten op IGF-1 groeihormoon


Soja ook voor zalm een probleem

Lilleeng used soya meal as the source of his ingredients, which is known to contain a series of anti-nutrients and to disturb the intestinal function of salmon. Lilleeng showed that intestinal immune defences become activated immediately feeding with soya commences. He also showed that enzymes normally associated with protein digestion have abnormally high levels of activity in the intestines of salmon with enteritis as a result of soya feeding. It appears that the intestinal mucous membrane, which previously has not been considered to be a source of these enzymes, also contributes to the high levels. Lilleeng and his colleagues have increased our knowledge of the receptors of the fish intestine, so-called PAR2-receptors, which may be activated by such digestive enzymes. Activation of these receptors is very likely a key factor in the development of soya-induced enteritis. This work has been an important contribution to the understanding of how the fish intestine defends itself against harmful substances in the feed and against disease generally.

Lees verder


Soja veroorzaakt vervroegde puberteit en menopauze

New Study Shows Compounds From Soy Affect Brain and Reproductive Development
Two hormone-like compounds linked to the consumption of soy-based foods can cause irreversible changes in the structure of the brain, resulting in early-onset puberty and symptoms of advanced menopause in research animals, according to a new study by researchers at North Carolina State University. The study is a breakthrough in determining how these compounds can cause reproductive health problems, as well as in providing a key building block for how to treat these problems. The study is the first to show that the actual physical organization of a region of the brain that is important for female reproduction can be significantly altered by exposure to phytoestrogens – or plant-produced chemicals that mimic hormones – during development. Specifically, the study finds that the compounds alter the sex-specific organization of the hypothalamus – a brain region that is essential to the regulation of puberty and ovulation. The study also shows that the phytoestrogens could cause long-term effects on the female reproductive system.

http://news.ncsu.edu/news/2008/07/wmspatisaulneurotox.php


The Dangers of a High Soy Diet

In this excerpt from the Inner Circle Interview, Dr. Kaayla Daniel talks about
how soy is really a dangerous food.

http://www.youtube.com/v/U9L5MJYfi2A


Soja(melk) en kinderen... geen goed idee!

In ons gezin hou ik het oog op de voeding. Altijd al van de volkoren, natuurlijke en gezonde produkten geweest. Omdat ik niet zo'n voorstander ben van koemelk in verband met slijmvorming, gebruikte ons gezin tot vorige week over het algemeen meer sojamelk dan koemelk - als we al iets van melk gebruikten. Met name onze dochter van 8 is nogal gek op sojamelk. Als wij bijvoorbeeld yoghurt met muesli aten, vroeg zij steeds om sojamelk met muesli. Ach, geen probleem toch... soja is immers gezond? Ikzelf had veel baat bij het gebruik van sojamelk tegen PMS klachten. Altijd veel last van gehad, maar als ik geregeld sojaprodukten gebruik... geen probleem.

Totdat ik op deze site (www.fonteine.com/soja.html) een link naar een andere site vond omtrent sojamelk waar ik een beetje van schrok. Sojamelk niet zo gezond? Sojamelk mogelijk gevaarlijk? Ik kwam ervaringen tegen van ouders waarvan de kinderen veel te vroeg in de groei waren geraakt, die veel te vroeg in de puberteit waren gekomen.

Ik schrok hier echt van, omdat onze dochter ook erg groot is voor haar  leeftijd. Ze zit ver boven de hoogste lijntjes van de groeicurves, en we waren al een aantal keer bij de schoolarts geweest omdat die zich daarover ongerust maakte. Indien de groei niet zou afzwakken zouden we 'er iets aan moeten gaan doen'.

Ook was het me opgevallen dat ze soms al echt naar zweet rook - iets wat normaal is als je 12 of 13 bent, maar toch niet als je 8 bent??!! Nu ik deze berichten gelezen heb begrijp ik het volgende: Soja bevat een stof die in het lichaam werkt als vrouwelijk hormoon. Vandaar natuurlijk dat ik zelf baat had bij sojamelk... alleen dacht Ūk dat dat gewoon kwam omdat sojamelk zo gezond is - maar nee, het komt van de hormonen!

Overigens heeft het vriendinnetje van mijn dochter koemelkallergie - ze drinkt en eet alleen sojaprodukten, en raad eens wat? Dat meisje is eveneens erg groot en lichamelijk te ver ontwikkeld voor haar leeftijd.

En net nu ik dat ontdekt heb, sprak ik gisteren met een vrouw wiens kleinzoon koemelkallergie heeft. De huisarts had echter gewaarschuwd: "In gťen geval vervangen door sojamelk: JONGETJES mogen helemŠal geen sojamelk hebben!"

Nu is het voor mij wel duidelijk dat sojamelk voor kinderen absoluut een heel slecht idee is. Als sojamelk al positieve effecten heeft, dan in elk geval niet op kinderen. Ook vind ik dat hier eigenlijk veel meer voor gewaarschuwd moet worden. Hoeveel onwetende ouders geven hun kinderen nog sojamelk, met misschien
zulke vervelende gevolgen?

Ulrike Staring



Soja gevaarlijk voor jonge kinderen?

Meer kritiek op soja en met name een waarschuwing voor effecten op babies en jongetjes.

Estrogens are female hormones. If you're a woman, you're flooding your system with a substance it can't handle in surplus. If you're a man, you're suppressing your masculinity and stimulating your "female side," physically and mentally. In fetal development, the default is being female. All humans (even in old age) tend toward femininity. The main thing that keeps men from diverging into the female pattern is testosterone, and testosterone is suppressed by an excess of estrogen.

http://worldnetdaily.com/news/article.asp?ARTICLE_ID=53327


Sojamelk, echt zo gezond?

Is sojamelk wel zo gezond? Er komt steeds meer kritiek op de manier waarop de soja industrie de zuivelindustrie aanpakt. Men wijst op de gevaren van stijging van het groeihormoon IGF-1 (*) door melkconsumptie terwijl soja dit nog sterker doet. Verder is steeds meer soja genetisch gemanipuleerd. 

http://www.youtube.com/watch?v=mHYFOJBU434&eurl=
http://www.westonaprice.org/soy/soy_milkcheese.html
http://www.westonaprice.org/soy/notmilk.html

(*) Arjmandi BH, Khalil DA, Smith BJ, Lucas EA, Juma S, Payton ME, Wild RA.  Soy protein has a greater effect on bone in postmenopausal women not on hormone replacement therapy, as evidenced by reducing bone resorption and urinary calcium excretion.  J Clin Endocrinol Metab. 2003 Mar;88(3):1048-54.
http://cat.inist.fr/?aModele=afficheN&cpsidt=14591501


Kanker waarschuwing mbt soja voeding

De Cancer Council of NSW (Australische gezondheidsorganisatie) waarschuwt kanker patiŽnten soja produkten te vermijden omdat zij de groei van tumoren kunnen versnellen. Met name de hormoon-gerelateerde kankers zoals borst- en prostaatkanker.

http://www.news.com.au/sundaymail/story/0,23739,21055803-952,00.html


Soja altijd gezond?

Niet iedereen is ervan overtuigd dat soja zo gezond is. Aan de ene kant heb je de propaganda van de soja industrie en aan de andere kant de sites die waarschuwen voor soja. Wel zit er verschil in pure soja produkten en gefermenteerde soja produkten. Eten Japanners echt zoveel soja of wordt gefermenteerde soja daar gewoon als smaakmaker gebruikt...... ik zal in ieder geval eens op zoek gaan naar studies en artikelen mbt de voor- en nadelen van soja zodat je zelf kunt bepalen of je soja in je dieet wilt opnemen......

Uit diverse studies blijkt wel dat bepaalde soorten veel oxaalzuur kunnen bevatten en dat kan weer voor nierstenen zorgen. Dit oxaalzuur komt ook voor in oa rabarber, zuring, raap, spinazie, postelein, rode biet, cacao en kan zich binden aan calcium en die combinatie kan dan weer tot nierstenen leiden.

Begrijp goed dat er veel geld omgaat in zowel de melk- als de zuivelindustrie dus wordt er over en weer met modder gegooid. Ik probeer dan ook zoveel mogelijk studies te vinden en artikelen die op die studies gebaseerd zijn.

Volgens professor Sheena Lewis van de universiteit van Belfast bevat soja stoffen die op het vrouwelijk hormoon oestrogeen lijken en deze kunnen bij mannen de vruchtbaarheid verlagen.....

Voor mij geldt nog steeds, alles met mate.....

Ron


Kanker waarschuwing mbt soja voeding

De Cancer Council of NSW (Australische gezondheidsorganisatie) waarschuwt kanker patiŽnten soja produkten te vermijden omdat zij de groei van tumoren kunnen versnellen. Met name de hormoon-gerelateerde kankers zoals borst- en prostaatkanker.

http://www.news.com.au/sundaymail/story/0,23739,21055803-952,00.html


Het cholesterol verlagen met behulp van het eiwit in soja

Amerikaanse onderzoekers vinden een nieuw goed punt van soja. Behalve dat het goed is voor het immuunsysteem en slagaders, zorgen de eiwitten in de soja ervoor dat het cholesterol niveau daalt.

http://www.lanutrition.fr/Diminuer-son-cholestťrol-
ŗ-l-aide-des-protťines-de-soja-n-1128.html


Soja versnelt groei kankercellen in darm

Voedselgoeroes bezingen soja in alle toonaarden. Stoffen in de sojaboon zouden de kans op allerlei soorten kanker verminderen en het menselijk hormoonsysteem verjongen. Onderzoekers van het Rikilt ontdekten echter dat een stof in soja de groei van kankercellen juist versnelt.Hoewel mensen die veel soja eten - zoals vegetarirs en Aziaten - minder vaak kanker krijgen, zijn wetenschappers al vaker op ziekmakende eigenschappen van soja gestuit. Welke stof de effecten veroorzaakte, was onduidelijk. In de jaren tachtig ontdekte het Nizo bijvoorbeeld dat proefdieren die veel soja-eiwit binnenkregen vaker kanker ontwikkelden. Ander onderzoek wees echter naar een andere verdachte, een stof die vastzit aan het soja-eiwit: de isoflavonode genistene. Bij vrouwen die de overgang achter de rug hebben, imiteert deze stof de werking van het vrouwelijke hormoon estradiol. Bij jonge mannen blokkeren stoffen als genistene estradiol juist. Sporters gebruiken ze om sneller vet te verliezen.

http://www.wur.nl/NL/nieuwsagenda/archief/nieuws/2001/
Sojaversneltgroeikankercellenindarm.htm


Soja - niet zo goed als je denkt

Soja bevat tevens plantaardige zuren en lectins (ofwel haemagglutins, invloed op bloed), nitrosamines (kankerverwekkend), manganese (mangaan), protease-remmers (protease zorgt voor gedeeltelijke omzetting van eiwitten, inbegrepen trypsines (dat zijn enzymen die zijn betrokken bij het proces ter ontmanteling proteÔnen ten behoeve van het lichaam. De zuren breken tal van vitaminen en mineralen af, hetgeen ook gebeurt als je teveel granen eet.

http://www.jankraak-taichitao.nl/content/
website.php?hoofdpagina_id=1066


Soy estrogens and breast cancer: Researcher offers overview

Are soy products healthy additions to a person’s diet, safe alternatives to hormone-replacement therapy or cancer-causing agents? The answer, according to University of Illinois food science and human nutrition professor William Helferich, is, “It depends.” He reviews the science linking breast cancer, soy and dietary supplements that contain soy phytoestrogens this month at a conference on “Diet and Optimum Health” sponsored by the Linus Pauling Institute at Oregon State University. Helferich has spent a decade evaluating the health effects of isoflavones, a class of plant estrogens present in high concentrations in soy. Much of his work has focused on a single isoflavone, genistein, which occurs in varying concentrations in soy products or ingredients such as tofu, soy protein isolates, soy flour and some estrogenic dietary supplements.

Genistein is of interest because it is the most active of the soy isoflavones, and because it activates estrogen receptors in cells, including some breast tumor cells. Dozens of studies of the role of human and plant estrogens in breast cancer have yielded seemingly contradictory findings. Some found that feeding genistein to female rats prior to puberty reduced the number of chemically induced mammary tumors. Other studies showed that estradiol, a primary human estrogen, spurs the growth of existing estrogen-dependent breast tumors. Helferich and colleagues demonstrated that – like estradiol – dietary genistein stimulates the growth of estrogen-responsive tumors. They also found that dietary genistein interferes with treatments, such as tamoxifen, that target estrogen receptors in breast tumors. (About 70 percent of women with breast cancer have estrogen-responsive tumors.)

“The resolution of this paradox may lie in the timing of estrogen administration,” Helferich said. Exposure to genistein, an estrogen, before puberty causes mammary gland differentiation. “A differentiated cell undergoes less proliferation and therefore is less likely to progress through the cancer process,” he said. “However, if the estrogen is administered to an animal after the development of an estrogen-responsive tumor, the growth of this tumor will be stimulated,” he said. Today Helferich is most concerned about the use of genistein and other isoflavones in supplements sold as “natural” alternatives to hormone-replacement therapy. He notes that midlife women who consume these products perceive them as natural and safe. But women aged 50 and older are also most at risk of developing breast cancer. Helferich is evaluating the biological activity of some of these products, which are available in many forms, do not require a prescription, and in most cases are consumed without the knowledge of their physicians.

Helferich notes that the incidence rate of breast cancer in women aged 50 and over in the U.S. dropped significantly after use of hormone-replacement therapy (HRT) declined in 2002 and 2003. While purified genistein is not as potent as HRT, Helferich said, it still poses a risk to midlife women because the amount consumed is much higher. The labels of many products that contain this and other isoflavones lack vital information about what is actually in their products, he said, and because these are natural products, the consistency from batch to batch is difficult to control. “Women are participating in an ongoing experiment with an unknown outcome,” he said. “You can’t identify what dose of isoflavones you’re getting.” But genistein is only one component of soy, Helferich said, and studying its effects in purified form may lead to misleading conclusions about the health consequences of soy in the diet. In fact, studies have shown that foods like soy flour have a very different effect. “The complex mixture found in soy flour doesn’t make the tumor grow,” Helferich said. “Whole soy contains a lot of biologically active ingredients, but together they may have multiple effects that can reduce the negative outcomes. When the whole food is consumed you get a very different effect than if you consume the concentrated constituents individually.”  All this research points to a very simple truth, Helferich said: The whole soybean is healthier than many of its individual chemical parts. “That raw food can be consumed for less than a dollar a serving and is likely better for you than that thing you pick up at the health food store for $30 a pound,” he said.


Twijfels over preventieve rol soja bij borstkanker

Johns Hopkins and Georgetown University researchers conducted a meta-analysis of 18 epidemiologic studies revealing that women who eat soy products may have a slightly lower risk of developing breast cancer. But the researchers quickly add that inconsistencies and limitations among the studies raise doubt about the potential benefit, and warn women that high-dose supplements could do more harm than good.

http://www.hopkinskimmelcancercenter.org/news/index.cfm?
documentid=771&newstype=News%20Releases&action=showthisitem


Doubts on soy's cancer prevention properties

Johns Hopkins and Georgetown University researchers conducted a meta-analysis of 18 epidemiologic studies revealing that women who eat soy products may have a slightly lower risk of developing breast cancer. But the researchers quickly add that inconsistencies and limitations among the studies raise doubt about the potential benefit, and warn women that high-dose supplements could do more harm than good.

http://www.hopkinskimmelcancercenter.org/news/
archive_details.cfm?documentid=771


Soy Formula Not Proven to Prevent Allergies in Infants, Review Concludes

Although soy infant formulas were created to reduce the chances of babies developing allergies or food intolerances, there is no clear proof that soy or other specialized formulas lower those risks, a new review has found. “There is no evidence that using any type of formula is better than exclusive breastfeeding for prevention of allergy,” said authors David Osborn, M.D., of Royal Prince Alfred Hospital and John Sinn, M.D., of Westmead Hospital, in Australia. “Specialized formulas should be restricted to situations where infants cannot exclusively breastfeed or when an infant develops a specific food allergy or hypersensitivity.” Food allergies can include wheat, peanuts, cow’s milk and soy protein. Cow’s milk allergy is the most prevalent in children and has been documented in 1.8 percent of children along with 0.5 percent of children who have allergies to soy protein, the reviewers say.

http://www.hbns.org/getDocument.cfm?documentID=1374


Dark soja sauce good for health

Dark soja sauce is better than vitamine C and red wine according to researchers of the university of Singapore.Volunteers who ate rice with dark soya sauce had free radical damage cut by 15 per cent over six hours after eating it, compared to those who ate rice with food colouring only. Between three and four hours after the meal, when the antioxidant effect reached its peak, damage was cut by 20 per cent. Those who ate rice with dark soya sauce also experienced increase in blood flow by 10 per cent over six hours. Between three and four hours after consumption, blood flow increased by as much as 50 per cent.

The findings were published in the international journal, Biochemical and Biophysical Research Communications. Said Professor Barry Halliwell, Deputy President (Research and Technology) and Head, Department of Biochemistry: “We are impressed that dark soya sauce slows down free radical damage in young healthy people. There’s a preventive aspect, showing that it may potentially slow down the rate of cardiovascular and neurodegenerative diseases.”

Next, the researchers are isolating the exact compounds in the sauce that are responsible for the antioxidant effect. Researchers would also need to ascertain whether long-term consumption of dark soya sauce will prolong its oxidising effect in the body, said Professor Halliwell.

http://newshub.nus.edu.sg/ke/0601/articles/pg05.htm


The whole soy story

Soy is one of the top allergens.

In the 1980s, Stuart Berger, MD, labeled soy one of the seven top allergens -- one of the "sinister seven." At the time, most experts listed soy around tenth or eleventh. Bad enough, but way behind peanuts, tree nuts, milk, eggs, shellfish, fin fish and wheat. Today soy is widely accepted as one of "the big eight" that cause immediate hypersensitivity reactions.

Food allergies are abnormal inflammatory responses of the immune system to dust, pollen, a food or some other substance. Those that involve an antibody called immunoglobulin E (IgE) occur immediately or within an hour. Reactions may include coughing, sneezing, runny nose, hives, diarrhea, facial swelling, shortness of breath, a swollen tongue, difficulty swallowing, lowered blood pressure, excessive perspiration, fainting, anaphylactic shock or even death.

Delayed allergic responses to soy are less dramatic, but are even more common. These are caused by antibodies known as immunoglobulins A, G or M (IgA, IgG or IgM) and occur anywhere from two hours to days after the food is eaten. These have been linked to sleep disturbances, bedwetting, sinus and ear infections, crankiness, joint pain, chronic fatigue, gastrointestinal woes and other mysterious symptoms.

Food "intolerances", "sensitivities" and "idiosyncrasies" to soy are commonly called "food allergies", but differ from true allergies in that they are not caused by immune system reactions but by little-understood or unknown metabolic mechanisms. Strictly speaking, gas and bloating, common reactions to soy and other beans are not true allergic responses. However, they might serve as warnings of the possibility of a larger clinical picture involving allergen-related gastrointestinal damage.

PROFIT vs RISK

The soybean industry knows that some people experience severe allergic reactions to its products. In a recent petition to the Food and Drug Administration (FDA), Protein Technologies International (PTI) identified "allergenicity" as one of the "most likely potential adverse effects associated with ingestion of large amounts of soy products." Yet PTI somehow concluded that "the data do not support that they would pose a substantial threat to the health of the US population."
This statement is hardly reassuring to the many children and adults who suffer allergies to soy products. And it ignores a substantial body of evidence published during the 1990s showing that some of these people only learn for the first time about their soy allergies after experiencing an unexpectedly severe or even life-threatening reaction. Although severe reactions to soy are rare compared to reactions to peanuts, tree nuts, fish and shellfish, Swedish researchers recently concluded, "Soy has been underestimated as a cause of food anaphylaxis".

http://www.thewholesoystory.com/


Hidden soya in fast food 'cutting men's fertility'

A team led by Sheena Lewis, professor of reproductive medicine at Queen's University in Belfast, has conducted studies linking soya to reduced male fertility. Scientists believe chemicals in the soya bean mimic the female hormone, oestrogen.

http://www.guardian.co.uk/medicine/story/0,11381,1345541,00.html


Too much soy could lead to kidney stones

New research indicates that soybeans and soy-based foods, a staple in the diets of many health-conscious consumers, may promote kidney stones in those prone to the painful condition. The finding will be published in the September issue of the Journal of Agricultural and Food Chemistry, a peer-reviewed journal of the American Chemical Society, the world’s largest scientific society. The researchers measured nearly a dozen varieties of soybeans for oxalate, a compound that can bind with calcium in the kidney to form kidney stones. They also tested 13 types of soy-based foods, finding enough oxalate in each to potentially cause problems for people with a history of kidney stones, according to Linda Massey, Ph.D., at Washington State University in Spokane. The amount of oxalate in the commercial products easily eclipsed the American Dietetic Association’s 10 milligram-per-serving recommendation for patients with kidney stones, with some foods reaching up to 50 times higher than the suggested limit, she noted.

http://www.eurekalert.org/pub_releases/2001-08/acs-tms082801.php

Oxalate content of soybean seeds (Glycine max: Leguminosae), soyfoods, and other edible legumes

http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=
PubMed&list_uids=11559120&dopt=Abstract


The Effects of Antenatal Exposure to Phytoestrogens on Human Male Reproductive and Urogenital Development

Recently in the news we have been hearing about declines in male fertility and increases in reproductive birth defects in males. We have discovered substitutes and replacements for products that have been part of our culture for hundreds of years, and we readily embrace new developments and technologies that make our lives easier. Now more than ever consumers are being exposed to many factors that may disrupt our delicate hormonal balances.

In the review entitled “A Sea of Estrogens,” author John Biggs warns us about the introduction of a whole range of endocrine disrupters into our food and the environment.1 Endocrine disruptors, including pesticides, industrial chemicals, pharmaceuticals and even plant hormones are having fundamental effects on immune function and the reproductive system. These compounds mimic hormones produced and regulated by the body’s delicate hypothalamal-hypophyseal-gonadal axis. Some of the most common industrial hormones are those that mimic the effects of estrogens, including dichlorodiphenyl-trichloroethane (DDT), bisphenol A, diethylstilbestrol (DES), genistein and enterodiol. When ingested, these estrogen-mimicking compounds (EMC) alter the normal levels of estrogen in both females and males by binding to and activating estrogen receptors.

http://www.westonaprice.org/soy/phytoestrogens.html


Oxalate and Phytate of Soy Foods

Human consumption of soy products is increasing. Soy foods have high nutritional value and also have been reported to have health benefits. However, high concentrations of oxalate in soy foods increase the risk of kidney stones. These are calcium oxalate kidney stones. Soy foods also contain phytate. Studies suggest that phytate exhibits effective anticarcinogenic action against many types of cancer. Phytate is also a potential inhibitor of calcium oxalate kidney stone formation. Our objective was to test 30 commercial soy foods for oxalate and phytate content. There was a wide range of concentrations of oxalate and phytate in the soy foods tested. Soy food containing low concentrations of oxalate and high concentrations of phytate may be advantageous for kidney stone patients or persons with high risk of kidney stones.

http://www.ars.usda.gov/research/publications/
Publications.htm?seq_no_115=178963


New Report on Soy Finds Limited Evidence for Health Outcomes

Daily consumption of soy protein found in tofu and other soybean products may result in a small reduction in low-density lipoprotein (LDL, known as bad cholesterol) and triglyceride levels, according to a new evidence review supported by HHS' Agency for Healthcare Research and Quality. In addition, isoflavones found in soy may reduce the frequency of hot flashes in post-menopausal women. However, the available studies on the health impacts of soy were limited in number, of poor quality, or their duration was too short to lead to definite conclusions. Overall, across the 68 studies that examined the impact of soy on cholesterol levels, consumption of soy products resulted in a 5 mg/dL (about 3 percent) reduction in LDL and an 8 mg/dL (about 6 percent) decrease in triglyceride levels in the populations studied. Among these studies, a large variety of soy products, doses of soy protein, and doses of soy isoflavones were tested. The average dose of soy protein in the studies was equivalent to about one pound of tofu or three soy shakes daily.

http://www.ahrq.gov/news/press/pr2005/soypr.htm


ISRAELI HEALTH MINISTRY ISSUES SOY WARNING

Scientists, doctors and nutritionists who have warned that soy is not a health food and poses special risks to infants and children received support this week from the Israeli Health Ministry, which issued a health advisory recommending that soy foods be eaten only in moderation.

“The Israeli Health Ministry strongly recommended that consumption of soy foods be
limited for young children and adults and that soy formula be avoided altogether by
infants,” said Kaayla T. Daniel, PhD, author of The Whole Soy Story: The Dark
Side of America's Favorite Health Food. “This is giant step forward. I hope that
Israel's action will encourage other government agencies to alert their citizens to the fact that it is a myth that soy is a 'health food' and that there are very real dangers from making soy a staple of their diets.”

Dr. Daniel noted that there are hundreds of studies linking soy foods and soy infant
formula to digestive problems, thyroid dysfunction, ADD/ADHD, dementia, reproductive disorders and even cancer. “The Israeli Ministry took this matter very seriously and based its advice upon the conclusions reached by a 13-member committee of nutritionists, oncologists, pediatricians and other specialists who spent more than a year examining the evidence. The committee concluded that the estrogen-like plant hormones in soy can cause adverse effects on the human body, including cancer promotion and reproductive problems. They strongly urged that consumption of soy foods be minimized until absolute safety has been proven.”
According to the Jerusalem Post (July 20), soy is widely used in Israel by people of all ages because it is a cheap substitute for meat and soy infant formula is especially popular among haredi families who choose not to mix milk-based baby formulas with meat meals. The Health Ministry plans to distribute information about the dangers of soy foods and soy infant formula to pediatricians, health care workers and the public. It firmly recommends that babies that cannot be breast fed receive cow's milk formula and be given soy infant formula only as a last resort. Day care centers and schools, many of which now frequently serve soy foods several times a day, are being told to limit them to no more than one serving per day and no more than three times per week. Finally, doctors should closely monitor the blood thyroxine levels of babies and toddlers suffering from hypothyroidism who are on soy infant formula and/or eating soy foods because of the well-known adverse effects of soy on the thyroid.

“The Israeli Health Ministry's recommendations are in accord with those made by the
United Kingdom's Chief Medical Officer and the British Dietetic Association, both of
which have alerted pediatricians and parents to use soy infant formula only in unusual circumstances,” said Dr. Daniel. “In New Zealand, the Health Ministry has suggested that doctors carefully monitor the thyroids of infants on soy formula. However, no country has come close to Israel's warning against soy foods for children up to age 18.

This sets an important precedent.” Although the Israeli Health Ministry stopped short of making recommendations on soy consumptions for adults, it found that the evidence on soy foods alleviating menopausal symptoms is inconsistent, that soy phytoestrogens can increase breast cancer risk and that they can reduce male fertility. The Ministry determined that soy has been shown to reduce blood cholesterol but stated that there is no clear proof that it reduces the risk of
heart disease. “The bottom line,” said Dr. Daniel “is that the Israeli Health Ministry looked long and hard at the evidence and reached the appropriate conclusion that we should eat soy only occasionally and in moderation because possible benefits are far outweighed by proven risks.”
* * * * *

Source: www.thewholesoystory.com


Soy: For Your Health or Their Wealth?

Soy has become synonymous with healthy eating. Who hasn't heard of the marvels of soy? Even Dr. Weil has jumped onto the soy band wagon, pushing the "health benefits" of soy during a recent appearence on Larry King Live. The USDA recently approved the use of soy in our children's school lunches. But could something that sounds so healthy actually be dangerous? Before you reach for that next bite of tofu and wash it down with some great tasting soy milk, we believe you should read about the dark side of soy.

More here


Only Fermented Soy Products Are Safe

To summarize, traditional fermented soy products such as miso, natto and tempeh, which are usually made with organically grown soybeans, have a long history of use that is generally beneficial when combined with other elements of the Oriental diet including rice, sea foods, fish broth, organ meats and fermented vegetables. The value of precipitated soybean products is problematical, especially when they form the major source of protein in the diet. Modern soy products including soy milks and artificial meat and dairy products made from soy protein isolate and textured vegetable protein are new to the diet and pose a number of serious problems.

More here


Too much tofu induces ‘brain aging,’ study shows

A Hawaii study shows a significant statistical relationship between two or more servings of tofu a week and "accelerated brain aging" and even an association with Alzheimer's disease, says Dr. Lon White. The Pacific Health Research Institute researcher urged caution at a recent conference in Washington as scientists from around the world discussed the role of soy products in the prevention and treatment of disease. The symposium was sponsored by giant soybean growing and processing firms such as Archer Daniels Midland and DuPont. The largely unregulated food supplements industry is preparing to step up sales, claiming that isoflavones, plant chemicals found in high concentrations in soybeans, offer "natural" cures for breast cancer, osteoporosis, prostate cancer, heart disease, menopausal "hot flashes" and other chronic conditions.

More here


Do dietary lectins cause disease?

In 1988 a hospital launched a "healthy eating day" in its staff canteen at lunchtime. One dish contained red kidney beans, and 31 portions were served. At 3 pm one of the customers, a surgical registrar, vomited in theatre. Over the next four hours 10 more customers suffered profuse vomiting, some with diarrhoea. All had recovered by next day. No pathogens were isolated from the food, but the beans contained an abnormally high concentration of the lectin phytohaemagglutinin.1 Lectins are carbohydrate binding proteins present in most plants, especially seeds and tubers like cereals, potatoes, and beans. Until recently their main use was as histology and blood transfusion reagents, but in the past two decades we have realised that many lectins are (a) toxic, inflammatory, or both; (b) resistant to cooking and digestive enzymes; and (c) present in much of our food. It is thus no surprise that they sometimes cause "food poisoning." But the really disturbing finding came with the discovery in 1989 that some food lectins get past the gut wall and deposit themselves in distant organs.

More here


Soy and breast and prostate cancer

Epidemiological studies of populations whose diets contain high levels of soy show that they have a lower incidence of and mortality from hormone dependent cancers such as cancer of the breast and prostate. In vitro studies have shown that genistein and diadzein, two isoflavones found in soy, can inhibit the growth of breast cancer8 and prostate cancer tissue. Conversely, dietary oestrogens from soybean products have been implicated as a possible cause of infertility and liver disease in some animal species, although these effects seem to be species specific.

More here


Uncovering the truth on soy

Have you ever wondered about soy? It's promoted as the miracle food that will feed the world while at the same time prevent and cure all manner of diseases. But what if all you've read about soy is nothing but a multi-million dollar marketing strategy based on scanty facts, half-truths and lies?

How could anyone get away with that? The soy industry is one of the world's most wealthy and powerful and one that will steamroll anybody that dares suggest there may be problems with the darling soy. When we first questioned the safety of soy a representative of Protein Technologies told us that they had:

teams of lawyers to crush dissenters, could buy scientists to give evidence, owned television channels and newspapers, could divert medical schools and could
even influence governments

More here


Soy Danger: Why you should avoid eating Soy

It's rather scary how our health has been put in danger for the sake of the food industry. So who is making billions at the risk of our health?

Archer Daniels Midland Company (ADM) is one of the leading manufacturers of soy products. They sought for "GRAS" (generally recognized as safe) status from the FDA for isoflavones, the estrogen-like compounds found in soy products. DuPont, owner of Protein Technologies International, is the leading manufacturer of soy protein isolate?

Soy can be found in many processed foods; over 75% of all processed foods! Check ALL can and box labels and know what you are eating. Read these articles to learn what to look for in the products being sold to consumers.

Half of the commercial dry pet foods have soy as the main protein source, with soy appearing as the first ingredient after corn or (in some very high protein products such as kitten food) as the first ingredient. If you want you pet to be healthy have less fleas, a good coat; I highly going to your local feed store and purchase MAX by Nutro Products, Inc. They have quality pet foods for both dogs and cats.

More here


Far from being the perfect food, modern soy products contain antinutrients and toxins and they interfer with the absorption of vitamins and minerals.

"Each year, research on the health effects of soy and soybean components seems to increase exponentially. Furthermore, research is not just expanding in the primary areas under investigation, such as cancer, heart disease and osteoporosis; new findings suggest that soy has potential benefits that may be more extensive than previously thought." So writes Mark Messina, PhD, General Chairperson of the Third International Soy Symposium, held in Washington, DC, in November 1999.[1]

For four days, well-funded scientists gathered in Washington made presentations to an admiring press and to their sponsors -- United Soybean Board, American Soybean Association, Monsanto, Protein Technologies International, Central Soya, Cargill Foods, Personal Products Company, SoyLife, Whitehall-Robins Healthcare and the soybean councils of Illinois, Indiana, Kentucky, Michigan, Minnesota, Nebraska, Ohio and South Dakota.

The symposium marked the apogee of a decade-long marketing campaign to gain consumer acceptance of tofu, soy milk, soy ice cream, soy cheese, soy sausage and soy derivatives, particularly soy isoflavones like genistein and diadzen, the oestrogen-like compounds found in soybeans. It coincided with a US Food and Drug Administration (FDA) decision, announced on October 25, 1999, to allow a health claim for products "low in saturated fat and cholesterol" that contain 6.25 grams of soy protein per serving. Breakfast cereals, baked goods, convenience food, smoothie mixes and meat substitutes could now be sold with labels touting benefits to cardiovascular health, as long as these products contained one heaping teaspoon of soy protein per 100-gram serving.

More here


Against the Grain

Genetically modified foods are rapidly becoming as common in the American diet as salt and soft drinks – but most Americans don’t know it. Food processors, grocery stores, regulators don’t have to tell you – and chances are they don’t even know

A new book by Marc Lappť and Britt Bailey, Against The Grain, makes it clear that genetic engineering is revolutionizing U.S. agriculture almost overnight.

In 1997, 15 percent of the U.S. soybean crop was grown from genetically engineered seed. By next year, if Monsanto Corporation’s timetable unfolds on schedule, 100 percent of the U.S. soybean crop (60 million acres) will be genetically engineered. The same revolution is occurring, at the same pace, in cotton. Corn, potatoes, tomatoes, and other food crops are lagging slightly behind, but compared to traditional rates of change in farming, are being deployed into the global ecosystem at blinding speed.

The mass media have largely maintained silence about the genetic engineering revolution in agriculture, and government regulators have imposed no labeling requirements. The result is the public has little or no knowledge that genetically altered foods are already being sold in grocery stores everywhere.

Genetic engineering is the process whereby genes of one species are implanted in another species to give new traits to the recipient. Under the natural order, the movement of genes has only been possible between closely related species. Now, however, genetic engineering allows scientists to play God, removing genes from a trout or a mosquito and implanting them in a tomato with unknown long-term consequences.

More here


Voorstanders van soja


Dr Andrew Weil

All told, based on the evidence to date, I see no reason to worry about eating soy foods, whether fermented or not. I still recommend consuming one to two servings of soy per day, an amount equivalent to one cup of soy milk, or one half cup of tofu, soy protein (tempeh) or soy nuts.

Andrew Weil, M.D.

http://www.drweil.com/u/QA/QA326575/


OmniHeart-studie toont gunstig effect van plantaardige eiwitten aan
Soja, noten, zaden en bonen: goed voor een gezond hart

De OmniHeart-studie1, gepubliceerd in het toonaangevend medisch
tijdschrift Journal of the American Medical Associaton (JAMA), toont aan dat men door het gedeeltelijk vervangen van koolhydraten door eiwitten in de voeding een lagere bloeddruk en bloedcholesterol bekomt. Belangrijke bronnen van plantaardige eiwitten zijn soja, noten, zaden en bonen. Personen met een lage bloeddruk en een laag cholesterolgehalte lopen minder risico op hart- en vaatziekten.

Meer dan 160 gezonde Amerikaanse vrijwilligers namen deel aan de OmniHeart-studie. De studie werd o.a. gefinancierd door het National Heart, Lung and Blood Institute. Professor Lawrence J. Appel van The Johns Hopkins University en zijn team vergeleken het effect van drie verschillende voedingspatronen op de
cardiovasculaire gezondheid. De drie geselecteerde voedingspatronen worden reeds aanbevolen bij patiŽnten met cardiovasculaire problemen omdat ze allemaal weinig verzadigd vet, cholesterol en zout bevatten en rijk zijn aan fruit, groenten, vezels en verschillende mineralen.

De drie voedingspatronen onderscheidden zich van elkaar door volgende kenmerken: het eerste bevatte een hogere hoeveelheid koolhydraten, het tweede was rijker aan mono-onverzadigde vetzuren en het derde aan plantaardige eiwitten.

De resultaten van deze Amerikaanse studie bevestigen de positieve effecten van de drie voedingspatronen op de gezondheid: ze verlagen de bloeddruk en het cholesterolgehalte. Indien de koolhydraten echter vervangen worden door plantaardige eiwitten door het integreren van soja, peulvruchten, granen, noten en zaden in de voeding levert dit bijkomende positieve gezondheidseffecten op. Deze gunstige effecten zijn bovendien groter dan die van de voeding rijk aan mono-onverzadigde vetzuren. De onderzoekers halen aan dat de resultaten van deze studie nauw aansluiten bij de resultaten van de recent gepubliceerde Intermap-studie2, die stelt dat het consumeren van plantaardig eiwit gepaard gaat met een belangrijke bloeddrukdaling.

“De resultaten van beide studies zijn van groot belang en ondersteunen de trend naar een gezondere leefstijl, waar plantaardige voedingsmiddelen een sleutelrol spelen,” aldus Christine Debeuf, International Science & Nutrition Manager van Alpro Soja. “We zien dat steeds meer mensen heel bewust kiezen voor soja omdat ze
weten dat het gezond ťn lekker is.”

1 Appel et al. Effects of Protein, Monounsaturated Fat, and Carbohydrate Intake on Blood Pressure and Serum Lipids, JAMA,
November 2005, Vol 294(19), blz. 2455- 2464.
2 Elliot et al., Association Between Protein Intake and Blood Pressure, Archives of Internal Medicine 2006, January, Vol 166,  blz. 79-87.

http://www.alpro.be/_images/pdf/_nl-BE/
Persbericht%20OmniHeart%20studie.pdf


Zweedse studie ziet risico op prostaatkanker met 26% dalen
Plantaardige voeding vermindert risico op prostaatkanker

Voeding die rijk is aan phyto-oestrogenen, kan het risico op
prostaatkanker met 26% doen dalen. Dat is vastgesteld in een Zweedse studie die het verband onderzocht tussen het risico op prostaatkanker en de consumptie van phyto-oestrogenen.

Phyto-oestrogenen zijn bestanddelen die van nature in plantaardige voeding voorkomen. Voorbeelden zijn isoflavonen uit soja en lignanen uit vlaszaad en roggebrood. Deze plantaardige bestanddelen werden door wetenschappelijk onderzoek al vaker in verband gebracht met een verminderd risico voor het ontwikkelen van prostaatkanker.

Een Zweedse studie heeft het verband tussen phyto-oestrogenen en het risico op prostaatkanker onderzocht. Hiertoe werd de voeding van 1499 Zweedse mannen met prostaatkanker vergeleken met 1130 gezonde mannen. Uit het onderzoek blijkt dat de personen met de hoogste inname van voedingsmiddelen, rijk aan phytooestrogenen (zoals soja, bonen, noten, bessen, zonnebloem zaden, vlaszaad), maar liefst 26% minder kans hadden om prostaatkanker te ontwikkelen. De hypothese dat voedingsmiddelen die van nature rijk zijn aan phyto-oestrogenen geassocieerd kunnen worden met een lager risico op prostaatkanker, wordt door deze studie ondersteund.

“Soja is uniek door zijn van nature hoge gehalte aan isoflavonen,” stelt Christine Debeuf, International Science en Nutrition Manager bij Alpro. “Het vervangen van melkproducten door de overeenkomstige sojaproducten is een eenvoudige manier om meer soja in de dagelijkse voeding te integreren,” aldus Debeuf.
De resultaten van deze studie werden gepubliceerd in Cancer Causes and Control (2006) 17:169-180.

http://www.alpro.be/_images/pdf/_nl-BE/Persbericht%20ALPRO.pdf

Opmerking: op de pagina over zuivel op deze site wordt grote inname van zuivel (calcium) juist weer gelinkt aan een grotere kans op prostaatkanker

http://www.fonteine.com/melk_ongezond.html


Intermap Study toont positief effect van plantaardig eiwit aan
Plantaardig eiwit doet bloeddruk dalen

Een grootschalige studie uitgevoerd bij 4680 deelnemers uit vier verschillende landen toont aan dat de consumptie van plantaardig eiwit bloeddrukverlagend werkt. Maar in tegenstelling tot andere studies, stellen deze onderzoekers geen correlatie vast tussen totale eiwitinname en bloeddruk.

Een hoge bloeddruk vergroot het risico op hart- en vaatziekten. Tot op heden werd een hoge eiwitconsumptie (van plantaardige of dierlijke oorsprong) vaak negatief gecorreleerd met de bloeddruk. Maar onderzoek toont aan dat vleeseters een hogere bloeddruk hebben in vergelijking met vegetariŽrs. In een recente studie gepubliceerd in Archives of Internal Medicine stellen Elliot en andere onderzoekers dat niet de totale hoeveelheid eiwit, maar wel de hoeveelheid plantaardig eiwit verantwoordelijk is voor een bloeddrukdalend effect. Maar liefst 4680 deelnemers uit vier landen (Japan, China, Verenigd Koninkrijk en de Verenigde Staten) namen deel aan de studie. De onderzoekers gingen na of er een verband bestaat tussen de voedselinname en de bloeddruk.

Uit de resultaten van het onderzoek blijkt dat een hogere consumptie van plantaardig eiwit gepaard gaat met een lagere bloeddruk. Welk deel van het plantaardig eiwit precies verantwoordelijk is voor de bloeddrukverlaging, is nog niet duidelijk. Wel stellen de onderzoekers een significant verschil vast in aminozuursamenstelling (waaruit eiwitten opgebouwd zijn) van voeding rijk aan plantaardig eiwit en voeding rijk aan dierlijk eiwit. Verder onderzoek zal uitwijzen of de aminozuursamenstelling wel degelijk verantwoordelijk is voor de bloeddrukdaling.

“Dergelijke studies zijn van groot belang omdat ze de positieve impact van aangepaste voeding op de gezondheid aantonen,” aldus Christine Debeuf, International Science and Nutrition Manager van Alpro, “Men kan meer plantaardige eiwitten consumeren door soja dagelijks in de voeding te integreren, bijvoorbeeld door melkproducten te vervangen door sojaproducten. Zo geniet men ook meteen van de vele andere voordelen van sojaproducten, zoals hun gunstige vetzuursamenstelling en het feit dat ze cholesterolvrij zijn.”

Meer informatie over deze studie vindt u in Archives of Internal Medicine (2006, January, Vol 166, blz. 79-87).

http://www.alpro.be/_images/pdf/_nl-BE/
Persbericht%20Intermap%20Study.pdf

 


Groeihormoon IGF-1, de kanker booster?


Volgens Dr John McDougall stimuleren zowel de soja- als koemelk eiwitten de produktie van het menselijke groeihormoon IGF-1. Men weet uit studie dat mensen met een lager niveau IGF-1 in hun bloed minder groeien maar ook langer leven.

Ook bij honden worden kleine honden meestal ouder. Er is op een gegeven moment een studie gedaan naar muizen waarbij het IGF-1 level kunstmatig was verlaagd. De muizen werder 40% ouder en bleven langer jong en gezond.

Uit studies blijkt verder dat IGF-1 de groei van je botten stimuleert (gunstig tijdens de groei) maar ook kankergroei stimuleert. Lange mensen hebben meer kans op darmkanker, borstkanker en worden minder oud. Uit een Engelse studie van 2002 bleek dat vrouwen die veganistisch aten 13% lagere IGF-1 levels hadden dan vegetarische (wel zuivel) of vleesetende vrouwen.

Wat is nu het doel van melk? De mens voeden? Nee, het is bedoeld voor een kalf dat in tijd van 6 maanden van 30 naar 300 kilo moet groeien. En daar zorgt nu juist dat IGF-1 hormoon voor. Wat denk je dat dit bij ons kan veroorzaken naast snelle botgroei ?

Bij een studie van 2004 op 8 jarige jongens blijkt dat 1.5 liter magere melk bij hun de IGF-1 levels verhoogd met maar liefst 19%.

In Nederland werkt de Nederlandse dietÔsten vereniging nauw samen met de zuivelpromotie organisatie, denk je dat die dan zullen gaan zeggen dat zuivel of soja ongezond zou kunnen zijn. Hopelijk gaat men uit eigen gelederen ook eens op onderzoek uit naar zowel de risico's van melk en soja. Voedingcentrum idem, krijgt geld vanuit de overheid en ook vanuit de industrie voor leerstoelen, verwacht je dat die dit gevoelige onderwerp aan zullen snijden?

Met soja heb ik altijd al een dubbel gevoel gehad. Aan de ene kant zegt men dat sojabonen goede voeding zijn maar ze moeten dan wel gefermenteerd zijn zoals tofu en tempeh. Maar wat blijkt nu, als je 40 gram eiwit neemt dan zie je de volgende stijgingen:

Eiwit uit zuivel > 36% stijging IGF-1 in het bloed
Eiwit uit soja   > 69% stijging IGF-1 in het bloed

Ik denk zelf dat zuivel/soja geen kanker veroorzaken maar het wel kunnen aanjagen als er een begin van kanker is. Leef je supergezond en heb je geen genetische aanleg voor kanker dan zal dit probleem misschien minder spelen maar is dit niet het geval dan kan een hoge IGF-1 voor een soort sneeuwbal effect zorgen. Het effect zal sterker zijn bij ouderen omdat die meer cellen met schade (roken, dronken, chemicaliŽn) kunnen hebben.

Ga dus zelf op onderzoek uit en lees de informatie die u kunt vinden. Er is geen arts, voedingsconsulente, specialist die je op deze donkere zijde van melk/soja zal wijzen ben ik bang. Ik zal studies, artikelen etc die ik hierover kan vinden op deze pagina plaatsen. Ik ga voorlopig voor noten/groenteburgers, rijstemelk en zeer beperkt (1-2 keer per week) biologisch vlees/wilde vette vis.

In Amerika is het probleem met de melk nog groter omdat boeren daar rBGH (bovine growth hormone) gebruiken, een genetisch gemanipuleerde versie van IGF als het ware.

Men doet het om de melkproduktie nog verder te stimuleren. Het menselijk lichaam heeft receptoren voor zowel lichaamsvreemd IGF van dieren en rBGH. Ook zijn Nederlandse melkkoeien zo gefokt dat zij een hoge melkopbrengst en dus veel IGF hormoon produceren.

Maar nog iets, ook fluor verhoogt IGF-1 levels. Leuk voor al die mensen die fluor tabletjes moesten slikken van de tandarts. Als voorgerecht fluor pilletjes, dan kwik in je kiezen en als toetje goedkope kronen met palladium. Na zo'n maaltijd krijg je vanzelf (metaal) moeheid.....kan allemaal geen kwaad hoor, jaja.....

Ron


Kanker waarschuwing mbt soja voeding

De Cancer Council of NSW (Australische gezondheidsorganisatie) waarschuwt kanker patiŽnten soja produkten te vermijden omdat zij de groei van tumoren kunnen versnellen. Met name de hormoon-gerelateerde kankers zoals borst- en prostaatkanker.

http://www.news.com.au/sundaymail/story/0,23739,21055803-952,00.html

Meer informatie mbt de rol van soja en zuivel op het menselijke groeihormoon IGF-1

http://www.fonteine.com/groeihormoon_igf1.html


Dierlijk eiwit en hormoon gerelateerde kanker (prostaat/borst)

Ik heb al een paar keer deze relatie genoemd maar weinig mensen nemen het verhaal helaas niet serieus. Met name bepaalde forums voor bodybuilders (die veel eiwitshakes nemen voor spiergroei) doen het verhaal af als onzin. Ook Atkins aanhangers (veel eiwit/vet) moeten dit maar eens lezen. Nederlandse media zijn pro zuivel en soja dus zullen dit wel weer doodzwijgen.  

Misschien dat deze "eiwit shake experts" eens naar deze nieuwe studie moeten kijken......


Does too much protein in the diet increase cancer risk?

Study shows low-protein, low-calorie dieters have reduced levels of hormone linked to cancer. A great deal of research connects nutrition with cancer risk. Overweight people are at higher risk of developing post-menopausal breast cancer, endometrial cancer, colon cancer, kidney cancer and a certain type of esophageal cancer. Now preliminary findings from researchers at Washington University School of Medicine in St. Louis suggest that eating less protein may help protect against certain cancers that are not directly associated with obesity. The research, published in the December issue of the American Journal of Clinical Nutrition, shows that lean people on a long-term, low-protein, low-calorie diet or participating in regular endurance exercise training have lower levels of plasma growth factors and certain hormones linked to cancer risk.

Fontana and colleagues found significantly lower blood levels of plasma insulin-like growth factor 1 (IGF-1) in the low-protein diet group than in either the equally lean runners or the sedentary people eating a standard Western diet. Past research has linked pre-menopausal breast cancer, prostate cancer and certain types of colon cancer to high levels of IGF-1, a powerful growth factor that promotes cell proliferation. Data from animal studies also suggest that lower IGF-1 levels are associated with maximal lifespan.

"Our findings show that in normal weight people IGF-1 levels are related to protein intake, independent of body weight and fat mass," Fontana says. "I believe our findings suggest that protein intake may be very important in regulating cancer risk."

http://mednews.wustl.edu/news/page/normal/8388.html?emailID=12304

Fontana L, Klein S, Holloszy JO. Long-term low-protein, low-calorie diet and endurance exercise modulat metabolic factors associated with cancer risk. American Journal of Clinical Nutrition, vol. 84; pp. 1456-1462, December 2006.


Dr. McDougall over de Insulin-like Growth Factor 1

John McDougall MD bespreekt hier de kankergroei promotor (groeihormoon) IGF-1. Het niveau IGF-1 in het bloed stijgt door consumptie van zuivel produkten, maar net zo goed door geÔsoleerd soja eiwit (sojamelk). Als je dus zuivel vermijdt vanwege mogelijke rol bij kanker dan moet je dus ook uitkijken voor sojaburgers en sojamelk. Het alternatief is dan rijstmelk of amandelmelk.

http://www.drmcdougall.com/
http://www.drmcdougall.com/misc/2005nl/050100pupushing.htm


Diet Changes May Slow Recurrent Prostate Cancer

When prostate cancer recurs, eating a plant-based diet and reducing stress may help slow progression of the disease, a new study shows.

The researchers investigated whether a plant-based diet might be another way to slow the advance of recurrent prostate cancer, because the typical "Western" diet high in animal protein and low in plant foods has been seen to boost the progression of the disease.

http://www.cancerpage.com/news/article.asp?id=10007


IGF-1 hormone Linked to Higher Risk of Ovarian Cancer

High levels of a protein called insulin-like growth factor (IGF)-I may increase women's risk of developing ovarian cancer before age 55, the results of a new study suggest.

Measuring IGF-I levels is unlikely to be useful as a screening test for ovarian cancer, according to the study's lead author, Dr. Rudolf Kaaks, of the International Agency for Research on Cancer in Lyon, France. However, he told Reuters Health that the discovery of elevated levels of the growth factor in women with ovarian cancer raises the possibility that diet, which can increase IGF-I, may be involved in ovarian cancer.

http://www.cancerpage.com/news/article.asp?id=5089


Saving Yourself from Prostate (or Breast) Cancer

Another mechanism linking dairy products and prostate cancer is a very powerful growth-stimulating hormone, known as insulin-like growth factor-1 (IGF-1). This hormone is increased in the body by the consumption of protein, and especially animal protein. However, dairy products are the worst offenders of all the foods we eat for raising this cancer-promoter.8 They can easily increase the levels in our bodies by 10% from consuming amounts of dairy products commonly recommended to keep our bones strong – and this fact comes from studies paid for by the dairy industry.9,10 On the other hand, vegan men have been found to have a 9% lower level of IGF-1 than men who follow a diet with meat and dairy products.11

http://www.healthylifestyleexpo.com/cancer.htm


Soy - double standards

Soy promoters often operate under a double standard, condemning a substance in milk while praising the same compound when it occurs in soy. One egregious example is that of Insulin-like Growth Factor-1, or IGF-1. You have been very vociferous in your condemnation of rBGH milk because it contains high levels of IGF-1, a compound that has been implicated as causing breast cancer.

However, you are silent when it comes to the IGF-1 levels in soy. When they are found in soy, promoters describe them as a benefit for bones. This is similar to the promotion of fluoride by the dental profession, while ridiculing its serious adverse health effects.

According to findings reported by researchers Arjmandi and Khalil, April 2001, soy increases serum IGF-1 levels. They took 64 healthy men and randomly assigned them to two groups, one that consumed 40 g of milk-based protein a day for three months and the other that took in 40 g of soy-based protein on the same schedule. Urine and blood samples showed that both groups experienced an increase in a substance associated with bone formation known as insulin-like growth factor-1.1

The group consuming soy protein had significantly more of this growth factor, according to Arjmandi. He and Khalil presented their findings at the Experimental Biology 2001 meeting in Orlando. "This is the first study to show that soy may benefit skeletal health in males," Arjmandi is quoted as saying.

It is unbelievable that an increase in IGF-1 levels could ever be interpreted as something "beneficial," as there are over 1900 studies on MEDLINE alone clearly showing the implications of IGF-1 in hormonal cancers. Such is the double standard we fine in health research science.

As you know, IGF-1 is released from the liver in response to growth hormones, etc. They act co-dependently with thyroid hormones on many biochemical activities, especially with thyroid stimulating hormone (TSH).

http://www.westonaprice.org/soy/notmilk.html


Kanker en melk

In melk zitten oestrogenen en deze kunnen vooral borstkanker stimuleren, net zoals de pil dit kan doen. Vooral de Amerikaanse biochemicus professor Colin Campbell waarschuwt voor de gevaren van melk en het verkrijgen van borstkanker. Publicaties in de Lancet (50) wijzen op de relatie tussen het groeihormoon (GH), insulin-like growth factor (IGF-1)in melk en kanker. Bij een verhoging van GH, zoals bij acromegalie bestaat, is een verhoogde kans op borst- en prostaatkanker. Een verhoging van het IGF-1 heeft dezelfde gevaren.

Deze twee stoffen schijnen door de pasteurisatie niet stuk te gaan en de groei van kankercellen te bevorderen. Een onderzoek in 1981 vermeldde al dat melk kanker van prostaat en colon kon veroorzaken.

Dat Nederland de langste vrouwen van de wereld heeft is waarschijnlijk het gevolg van de hoge melkconsumptie. Dit gebeurt nu ook in Japan. Nadat men daar ook melk is gaan drinken zijn de vrouwen gemiddeld 11,5 cm langer en 8,6 kg zwaarder geworden en zijn ze 3 jaar vroeger gaan menstrueren.

http://home.planet.nl/~beunk007/melk.html


Prof Campbell over IGF-1

Dierlijke proteÔnen zijn carcinogeen en bevorderen kanker en doen dit op vele manieren. …ťn manier waarop dit gebeurt is door de productie van bepaalde groeihormonen te stimuleren, een ervan heet IGF1 (Insulin like growth factor 1) de insulineachtige groeifactor 1. Dit hebben we in onze proeven ook kunnen meten. Dus caseÔne veroorzaakt de toename van deze groeihormonen en dat stimuleert de groei van kanker.

Een beetje erg simpel gesteld: maar het hormoon gaat naar de cel en creŽert binnen de cel een soort nieuwe set van factoren om de groei te stimuleren. En dat gebeurt op een nogal complexe wijze maar het belangrijke, zelfs het meest belangrijke, hiervan is dat het gebeurt, dus de IGF1 stimuleert celdeling oftewel de vermenigvuldiging van de cel.

Welk soort kanker kan hier het gevolg van zijn?

Het is zo dat deze bewijzen uit onderzoek bij mensen nu pas geleverd worden, dus dat hogere waarden IGF samenhangen met bijvoorbeeld prostaatkanker en, bij sommige onderzoeken, met borstkanker. En, aangezien alle kankersoorten verband houden met een versnelde celdeling oftewel celgroei, hebben alle kankersoorten deze eigenschap. Concluderend, het groeihormoon die de celgroei stimuleert zal hetzelfde effect hebben op verschillende kankersoorten. Het feit dat we nog geen empirische gegevens hebben voor al deze kankersoorten betekent niet dat het niet bestaat. Alleen al op basis van de fundamentele biologie denk ik te kunnen stellen dat wij dit uiteindelijk in verschillende mate zullen kunnen concluderen voor iedere soort kanker.

http://www2.trosradar.nl/?url=PHP/news/20/1180


Soja: niet zo goed als je denkt

Doordat soja nu vrijwel in talrijke producten wordt verwerkt krijgen veel mensen, die geen speciale sojaproducten kopen, het binnen. Mensen die ook nog veel sojamelk, tofu, tempeh, sojaworstjes- en sojavlees eten, krijgen teveel isoflavonen en dus fyto-oestrogenen binnen.

Fyto-oestrogenen zijn endocriene verstoorders. De fyto-oestrogenen verhogen de kans op borstkanker en verstoring van de schildklier. Omdat de fyto-oestrogenen in poedermelk voorkomt en soja vrijwel al in veel producten voorkomt, ook in babyvoeding, is het schadelijk voor de gezondheid van de baby. De fabrikanten weten er van.

http://www.jankraak-taichitao.nl/content/website.php?hoofdpagina_id=1066


Growth Factor Raises Cancer Risk

High levels of a well-known growth factor significantly increase the risks of colorectal, breast, and prostate cancer, medical researchers have found.

When IGF-1 is added to dishes of cells growing in the laboratory, the cells flourish like flowers blooming in spring. In children, the hormone stimulates bone growth and development of organs such as the heart, liver, and kidneys. But in older people, rapidly proliferating cells increase the opportunity for genetic mutations that may lead to cancer. And once cancer cells begin to form, IGF-1 will promote their growth as well as that of normal cells.

Ma mentions evidence of a connection between colorectal cancer and acromegaly, a condition that causes enlargement of facial features, hands, and feet due to excess secretion of growth hormone. "The rate of colorectal cancer among acromegalics is abnormally high, because their IGF-1 levels can be up to 10-fold higher that those of normal people," she notes.

"The levels of IGF-1 implicated in increased risks for cancer among middle-aged and older nurses and physicians in our studies are not as high as those in acromegalics or abnormally tall people," Giovannucci explains. "Rather they are at the high end of what we would consider a normal range."

IGF-1 is a major determinant of height, and taller people are at higher risk for colorectal, breast, and prostate cancer, according to Ma. "It is possible that people who grow tall, because of higher levels of IGF-1 in childhood and adolescence, have a high risk of cancer in adulthood," Giovannucci points out. "However, someone who retains high levels of the hormone from childhood through middle age might be at even higher risk."

http://www.hno.harvard.edu/gazette/1999/04.22/igf1.story.html


Plasma insulin-like growth factor-I and prostate cancer risk: a prospective study

Reduction of androgen action has been the principal strategy under investigation for prostate cancer prevention. If our results are confirmed, pharmacological approaches to decreasing IGF-I bioactivity may warrant investigation as risk-reduction strategies specifically targeted at men at high risk due to increased IGF-I levels. Partial suppression of the growth hormone (GH)-IGF-I axis by somatostatin analogs or GH-releasing hormone antagonists are two possibilities. Finally, our results raise concern that administration of GH or IGF-I over long periods, as proposed for elderly men to delay the effects of aging, may increase risk of prostate cancer.

http://www.ejnet.org/bgh/igf-1science.html


Hormonal Predictors of Prostate Cancer: A Meta-Analysis

Conclusion: Men with either serum testosterone or IGF-1 levels in upper quartile of the population distribution have an approximately two-fold higher risk for developing prostate cancer.

J Clin Oncol 18:847-853. © 2000 by American Society of Clinical Oncology.

http://www.jco.org/cgi/reprint/18/4/847.pdf


Milk could be link to cancer

Pregnancy may lower a woman's risk of cancer but drinking milk could raise it, researchers reported this week. Both factors, as well as the use of hormone replacement therapy, affect levels of a hormone that may influence the development of some cancers, a team at Brigham and Women's Hospital and Harvard Medical School in Boston found.

http://www.nutraingredients.com/news/ng.asp?id=36262-milk-could-be


Growth hormone, IGF-I and cancer. Less intervention to avoid cancer? More intervention to prevent cancer?

The GH/IGF-I axis has a clearly established role in somatic growth regulation and there is much evidence suggesting that it can play a contributing role in neoplastic
tissue growth; a number of recent epidemiological reports indicate that it may also be an important determinant of cancer incidence.

If the association between IGF-I and risk of breast and prostate cancers is as strong as that of the gonadal steroids, as the recent epidemiological data suggest, then this implies that manipulating IGF-I may also be successful in reducing cancer incidence.

http://joe.endocrinology-journals.org/cgi/reprint/162/3/321.pdf


Ook fluor verhoogt IGF-1

Fluoride may be responsible for increased rates of breast cancer by virtue of another process: Fluoride raises levels of a hormone called insulin-like growth factor (IGF-1). Though useful for a number of metabolic functions, when IGF-1 levels are raised there is an increased risk of cancer. Premenopausal women with the highest levels of IGF-1 in their blood have shown a sevenfold increase in the risk of breast cancer. It is interesting to note that other items in the food chain significantly raise IGF-1 levels. One of them is milk which has been treated with Monsanto's bovine growth hormone, and the other, as you may have guessed, is soy.

http://thyroid.about.com/od/bookssupportresources/a/barbeeinterview_2.htm
http://www.mercola.com/2001/aug/22/igf-1.htm

 

Studies

Fluoride treatment increased serum IGF-1, bone turnover, and bone mass, but not bone strength, in rabbits.

http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve
&db=PubMed&list_uids=9192519&dopt=Abstract


Toename calcium, eiwit en soja kan tot verhoging
IGF-1 levels leiden

Sequential, randomized trial of a low-fat, high-fiber diet and soy supplementation: effects on circulating IGF-I and its binding proteins in premenopausal women.

The results are compatible with previous data suggesting that increases in dietary calcium, protein and soy, in particular, could increase circulating levels of bioavailable IGF-I.

http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=
pubmed&cmd=Retrieve&dopt=AbstractPlus&list_uids
=15800921&query_hl=5&itool=pubmed_docsum


Studies naar rol IGF-1 bij kanker

Er zijn in Pubmed 3461 studies te vinden mbt IGF-1 en kanker.

Nadat je deze link aan hebt geklikt even bij optie "display" de keuze abstract (samenvatting) kiezen.

http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=search&db=
PubMed&term=cancer%20AND%20%28igf1%20OR%20insulin%
20like%20growth%20factor%201%29


IGF-I, IGFBP-3 and breast cancer risk in women: The European Prospective Investigation into Cancer and Nutrition (EPIC).

This study confirms previous findings for an association of serum IGF-I and IGFBP-3 concentrations with breast cancer risk, particularly for women with a later diagnosis of cancer, but it does not support the hypothesis of an involvement of IGF-I in younger women.

http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Retrieve&
dopt=AbstractPlus&list_uids=16728585&query_hl=2&itool=pubmed_DocSum


Insulin-like Growth Factor I in Pregnancy and Maternal Risk of Breast Cancer

The study offers further evidence that IGF-I is important in breast cancer. Our findings suggest that the adverse effect of IGF-I on the breast may be stronger before the remodeling of the gland induced by a first pregnancy. (Cancer Epidemiol Biomarkers Prev 2006;15(12):2489-93).

http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Retrieve&
dopt=AbstractPlus&list_uids=17132766&query_hl=2&itool=pubmed_DocSum


Factors associated with circulating levels of insulin-like growth factor-I and insulin-like growth factor binding protein-3 in 740 women at risk for breast cancer.

We conclude that circulating IGF-I levels are higher in women with prior breast cancer compared to unaffected women, and that IGF-I and/or IGFBP-3 levels are influenced by age and by reproductive and hormonal factors. These findings support their putative role as breast cancer risk biomarker.

http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?itool=abstractplus&db
=pubmed&cmd=Retrieve&dopt=abstractplus&list_uids=15538047


Hormones and Cancer Risk

Professor Tim Key, Cancer Research UK, Cancer Epidemiology Unit, The Radcliffe Infirmary, Oxford

The main hormone-related cancers are those of the breast, prostate, ovary and
endometrium. Of these, the best evidence for a chemoprevention strategy is for
breast cancer, either by blocking the effects of oestradiol (by tamoxifen, raloxifene) or
by reducing circulating levels of oestradiol (using aromatase inhibitors [in postmenopausal women] and LHRH agonists [in pre-menopausal women]). Other
hormones that are linked with an increased risk of breast cancer are insulin-like
growth factor (IGF-1) and progesterone (e.g. in Hormone Replacement Therapy).
High parity and breastfeeding offer protection.

For prostate cancer, the hormonal association is less straightforward. Blood tests
show no difference in blood testosterone levels between men with and without
prostate cancer (compared to a 15% difference in oestrogen in women with breast
cancer). This may possibly be due to the fact that the form of testosterone found in
the prostate (DHT) is 100 times more active than that found in the blood. However,
there may again be a role for IGF-1, as this is 6% higher in men with prostate cancer.
The potential for chemoprevention is being studied in a large US trial of finesteride,
which can prevent active testosterone in the prostate. Other strategies might include
blocking the androgen receptor and reducing IGF-1. For the latter, a dietary strategy
might be considered, although the evidence is restricted to vegan diets, where a 10%
difference is seen.

http://science.cancerresearchuk.org/reps/pdfs/meeting_pbs_1prevresrep.pdf


Diets high in fat and animal protein linked to increased risk of non-Hodgkin's lymphoma

Consuming foods high in animal protein, saturated fat, eggs and dairy leads to an increased risk of developing non-Hodgkin's lymphoma (NHL), a cancer that attacks the lymphatic system, part of the body's immune system, Yale researchers have found.

Published in the American Journal of Epidemiology, the study also showed that diets high in dietary fiber -- tomatoes, broccoli, mixed lettuce salad with vegetables, cauliflower, etc.-- were associated with a reduced risk of NHL.

"An association between dietary intake and NHL is biologically plausible because diets high in protein and fat may lead to altered immunity, resulting in increased risk of NHL," said principal investigator Tongzhang Zheng, M.D., associate professor of epidemiology and environmental health at Yale School of Medicine. "The antioxidants found in vegetables and fruits may result in reduced risk of about 40 percent."

The study was conducted between 1995 and 2001 on 601 Connecticut women between the ages of 21 and 84 diagnosed with varying subtypes of NHL. Using a Food Frequency Questionnaire (FFQ) developed by the Fred Hutchinson Cancer Research Center, each participant was asked to characterize her usual diet in the year prior to being interviewed. The FFQ collects consumption frequency and portion size data for approximately 120 foods and beverages and is periodically updated to reflect U.S. food consumption patterns and major market changes. After completion, the FFQ was sent to the Fred Hutchinson Cancer Research Center for calculating average daily nutrient intakes. The study included a control group of 717 women.

"So far, risk of NHL associated with animal protein and fat intakes has only been investigated in American women, in three studies," said Zheng. "If the association could also be demonstrated in American men, it would provide important information towards understanding the cause of NHL."

http://www.yale.edu/


Insulin-like growth factor I (IGF-I), IGF-binding proteins, and
breast cancer.

In premenopausal women, elevated serum IGF-I and IGFBP-3 are associated with increased breast cancer risk, whereas elevated serum IGFBP-2 is inversely associated with risk of postmenopausal breast cancer.

http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?itool=abstractplus&db=
pubmed&cmd=Retrieve&dopt=abstractplus&list_uids=12496045


Premenopausal levels of circulating insulin-like growth factor I and the risk of postmenopausal breast cancer

The association between circulating levels of IGF-I and postmenopausal breast cancer risk may be modified by age. Increased levels of circulating IGF-I may be of particular interest in the younger premenopausal women and older postmenopausal women. Age-stratification should be undertaken in larger investigations of IGF-I levels as predictors of postmenopausal breast cancer.

http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?itool=abstractplus&
db=pubmed&cmd=Retrieve&dopt=abstractplus&list_uids=16161053


IGF-1 en insuline beschermen darmkankercellen tegen celdood

Resistance of cancer cells against apoptosis induced by death factors contributes to the limited efficiency of immune- and drug-induced destruction of tumors. We report here that insulin and insulin-like growth factor-I (IGF-I) fully protect HT29-D4 colon carcinoma cells from IFN-gamma/tumor necrosis factor-alpha (TNF) induced apoptosis.

http://cancerres.aacrjournals.org/cgi/content/full/60/7/2007


A prospective study of serum insulin-like growth factor-I (IGF-I), IGF-II, IGF-binding protein-3 and breast cancer risk

These data are compatible with the hypothesis that premenopausal women with a relatively high circulating concentration of IGF-I and low IGFBP-3 are at an increased risk of developing breast cancer.

http://www.nature.com/bjc/journal/v92/n7/abs/6602471a.html


IGF-1 en prostaatkanker relatie

An early small case-control study Greece (1), as well as a more recent larger case-control study in Sweden (2) also found positive associations between IGF-I concentrations and the risk of prostate cancer.

http://www.sciencemag.org/cgi/reprint/282/5387/199a.pdf

1. C. S. Mantoros et al., Br. J. Cancer 76, 1115 (1997).
2. A. Wolk et al., J. Natl. Cancer Inst. 90, 876 (1998).


Soja marketing onzin.....

Marketers of soy products would like us to believe that Asians have good health because they eat a "soy-based" diet. This simply is not true. In China the daily consumption of soy is about two teaspoons. In Japan it is about two ounces a day. In China they get most of their protein from pork. For the Japanese, it is from fish. In fact, the Japanese eat more eggs than they do soy. They eat more eggs than anyone in the world, followed closely by the Chinese. It is curious that the egg sellers didn't capitalize on this. They could have said, "Be healthy, eat like the Japanese, eat more eggs!"

Soy in Japan is used merely as a side dish or condiment, and the form of soy they consume makes a big difference. They mostly consume fermented soy products like tempeh, miso, and natto. The fermentation process alters soy in such a way that the natural toxins, antinutrients, and goitrogens are neutralized, and the isoflavones are made beneficial-- or at least, less harmful.

http://thyroid.about.com/od/bookssupportresources/a/barbeeinterview_2.htm


Animal-based nutrients linked with higher risk of stomach and esophageal cancers

Yale School of Medicine researchers have found that a diet high in cholesterol, animal protein and vitamin B12 is linked to risk of a specific type of cancer of the stomach and esophagus that has been increasing rapidly.

The researchers also found that plant-based nutrients such as dietary fiber, dietary beta-carotene, folic acid, vitamin C and vitamin B6 were associated with lower risk of these kinds of cancers. They further found that regular use of vitamin C supplements was associated with a 40 percent reduction in the risk of cancer in the middle and lower parts of the stomach.

The rate of a specific type of esophageal and stomach cancer, known as adenocarcinoma of the esophagus and gastric cardia, has increased by 300 percent since the mid-1970s, according to lead author Susan Mayne, associate professor in the Department of Epidemiology and Public Health at Yale School of Medicine, and associate director of the Yale Cancer Center. To identify reasons for this rapid increase, the United States National Cancer Institute launched a large study at three centers, including Yale, the University of Washington and Columbia University.

The researchers interviewed patients throughout Connecticut, New Jersey and western Washington State and compared the nutrient intake of 1,095 people with stomach or esophageal cancer to that of 687 healthy people in a control group. The team also looked at the participants' use of nutrient supplements. Their results are published in the October issue of Cancer Epidemiology, Biomarkers & Prevention.

"We found that many animal-based nutrients found in foods of animal origin are strongly associated with risk of developing these types of cancers and we were able to identify nutrients that presumably would be protective," said Mayne. "We also found that regular users of vitamin C supplements were at significantly lower risk of stomach cancer."

In a separate analysis of these data, the research team found that obesity is strongly linked with risk of these cancers. "The increase in the prevalence of obesity in the United States certainly contributes to the time trends," said Mayne. "Our results suggest that prevention strategies for these cancers should emphasize increased consumption of plant foods, decreased consumption of foods of animal origin with the possible exception of dairy products, and control of obesity."


Higher intake of vegetable protein associated with lower blood pressure levels

People who eat more protein from vegetables tend to have lower blood pressure, according to a new study in the January 9 issue of Archives of Internal Medicine, one of the JAMA/Archives journals.
Most adults have either high blood pressure (hypertension) or prehypertensive blood pressure levels, according to background information in the article. Previous studies have found evidence that meat eaters generally have higher blood pressure than vegetarians. Other research looked directly at the effect of high overall protein intake and found that people with higher total protein intake are likely to have lower blood pressure, the authors report.

Paul Elliott, M.B., Ph.D., from Imperial College London, and colleagues analyzed data from the INTERMAP study, which included 4,680 people (2,359 men and 2,321 women) aged 40 to 59 years from four countries. They measured each participant's systolic and diastolic blood pressure eight times at four visits in a three- to six-week period. Each person wrote down everything they had eaten and drank during the previous 24 hours, including dietary supplements, at each visit. Urine samples were also taken on the first and third examinations.

Judging by their food records and urine samples, those who ate more vegetable protein were more likely to have lower blood pressure than those who ate less vegetable protein. Though the researchers noted a slight association between animal protein and high blood pressure, this link disappeared when they accounted for participants' height and weight. There was no link between total protein intake and blood pressure, in contrast to previous studies.

The researchers are unsure exactly how vegetable proteins might affect blood pressure, but note from their data that amino acids may play a role. Some of these building blocks of protein have been shown to influence blood pressure, and different amino acids were present in diets high in vegetable protein than in those that contained more animal protein. Other dietary components of vegetables, such as magnesium, also may interact with amino acids to lower blood pressure.

"Our results are consistent with current recommendations that a diet high in vegetable products be part of a healthy lifestyle for prevention of high blood pressure and related chronic diseases," the authors write. "Definitive ascertainment of a causal relationship between vegetable protein intake and blood pressure awaits further data from randomized controlled trials, especially regarding the effect of constituent amino acids on blood pressure."

 

 

 

 

 

 
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