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Q & A: Men, Soy Does Not Lower Testosterone

Posted May 20 2009 9:31am 1 Comment

Soy gets a bad rap, people associate it with being a hippie and tree hugging, even though soy is a very healthy food, like edamame beans, but there is this silly notion that eating soy lowers testosterone and is bad for men. Not true. From his member center, Dr. Fuhrman talks about soy and manliness:

Question: My husband and I just started your plan, but recently my mother-in-law said that I was hurting my husband by making him eat more soy. She said that soy is not good for men because it contains phytoestrogens. Is what she is saying true? She cited an article in Men's Health that mentioned lower testosterone and sperm counts.

Answer: Totally untrue, that is a biased, meat-promoting article written to bash soy. Men's magazines are not the place for reliable information about complicated health issues. If soy did lower testosterone it might be good because the high-meat American diet causes an excess of testosterone, leading to higher prostate cancer risk. Nevertheless this is not true anyway. See this study in the European Journal of Clinical Nutrition.

Flickr: John McNab

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SCIENTIFIC CONFIRMATION: SOY DOES NOT HAVE FEMINIZING EFFECTS ON MEN - VERIFIED

ANALYSIS: "Soybean isoflavone exposure does not have feminizing effects on men" - NIH National Institute of Health

"Neither isoflavone supplements nor isoflavone-rich soy affect total or free testosterone levels. Clinical evidence also indicates that isoflavones have no effect on sperm. There is essentially no evidence from the nine identified clinical studies that soy isoflavone exposure affects estrogen levels in men."

http://www.ncbi.nlm.nih.gov/pubmed/20378106



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METASTUDY: REVIEW SPANNING VOLUMES OF MULTIPLE STUDIES SHOW NO ESTROGENIC EFFECT OF SOY ON MEN'S TESTOSTERONE

PUBMED JOURNAL: "Clinical studies show no effects of soy protein or isoflavones on reproductive hormones in men"


"32 reports involving 36 treatment groups and 15 placebo-controlled treatment groups with baseline and ending measures involving soy, isoflavones, genistein, phytoestrogens, red clover, androgens, testosterone, and SHBG, were analyzed. CONCLUSION: The results of this meta-analysis found that neither soy foods nore soy isoflavone supplements alter measures of bioavailable Testosterone concentrations in men. There was no effect.


http://www.ncbi.nlm.nih.gov/pubmed/19524224


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AMERICAN INSTITUTE FOR CANCER RESEARCH: SOY HAS NO ESTROGEN, SOY ESTROGEN MYTH IS AN UN-SCIENTIFIC HOAX.

AICR: "Men Don't Need to Fear Soy Foods" -American Institute for Cancer Research

It’s no wonder that men who have read the recent stories circulating about soy are confused. Some stories claim that soy foods, such as tofu and soy milk, can lead to breast growth or reduce testosterone levels.

- Fears that the amount of phytoestrogens in moderate amounts of soy foods could stimulate men’s breast tissue or reduce their testosterone are not based on sound research.

- A study of children fed soy protein formula for more than six months showed no hormonal effects.

- A study of men found that the men who ate soy foods twice a day for three months showed NO change in testosterone levels.

- Soy does not cause prostate cancer, on the contrary, the studies showed eating soy by men was beneficial in lowering the risk of prostate cancer.

Men can feel safe.

http://www.foodconsumer.org/newsite/Nutrition/Food/180820091053_nutrition_notes_men_don_t_need_to_fear_soy_foods.html



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BODYBUILDING MAGAZINES CONFIRM IT:

MUSCULAR DEVELOPMENT MAGAZINE:

"SOY PROTEIN HAS *NO* EFFECT ON TESTOSTERONE LEVELS"

"The meta-analysis examined 47 research reports covering 51 treatment groups. Peer-reviewed studies. The analysis concluded that neither soy protein nor isoflavone supplementation exerted any negative alterations on bioavailable testosterone in males, regardless of research model.

Soy did not exert any estrogen-like effects in men, nor any lowering of testosterone levels or other reproductive hormones."

http://www.musculardevelopment.com/index.php?option=com_content&task=view&id=1623&Itemid=51



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IRON-MAN MAGAZINE CONFIRMS:

SOY PROTEIN HAS NO EFFECT ON MEN, SOY HAS NO EFFECT ON TESTOSTERONE

IRONMAN MAGAZINE: "Eating soy has No effect on either testosterone or estrogen levels"


"You see the caution on countless Internet sites related to bodybuilding: Avoid eating soy products unless you want to lower your testosterone count. At first glance the dire warnings about soy are plausible...However, actual scientific research found that soy protein and isoflavone intake had No significant effects on testosterone.

Neither total nor free testosterone was negatively affected by dietary soy in Any of the studies. None.

Also, Studies confirmed Soy has no negative effect on thyroid hormones.

Both whey and soy proved superior to casein in aiding muscle protein synthesis in young men.

Eating soy will have no effect on either testosterone or estrogen. - STRAIGHT FROM "IRONMAN BODYBUILDING" MAGAZINE

http://www.ironmanmagazine.com/site/soy-and-your-testosterone/



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NEWS: VEGANS HAD MORE TESTOSTERONE THAN OMNIVORES. VEGANS HAD 23% HIGHER SHBG. AND NO STATISTICALLY SIGNIFICANT DIFFERENCES BETWEEN OMNIVORES & VEGANS IN FREE T OR E2

British Journal of Nutrition
Hormones and Metabolism
    * British Journal of Nutrition (1990), 64 : pp 111-119
    * Copyright © The Nutrition Society 1990
    * DOI: 10.1079/BJN19900014 (About DOI)
    * Published online: 09 March 2007

TITLE:
Testosterone, sex hormone-binding globulin, calculated free testosterone, and oestradiol in male vegans and omnivores

AUTHORS:
Timothy J. A. Keya1, Liane Roea2, Margaret Thorogooda2, John W. Moorea3, Graham M. G. Clarka3 and Dennis Y. Wanga3
a1 Cancer Epidemiology Unit, Imperial Cancer Research Fund, Gibson Building, Radcliffe Infirmary, Oxford OX2 6HE
a2 General Practice Research Group, Imperial Cancer Research Fund, Department of Community Medicine & General Practice, Gibson Building, Radcliffe Infirmary, Oxford OX2 6HE
a3 Clinical Endocrinology Laboratory, Imperial Cancer Research Fund, PO Box 123, Lincoln's Inn Fields, London WC2A 3PX

Abstract:
Total testosterone (T), total oestradiol (E2) and sex hormone-binding globulin (SHBG) concentrations were measured in plasma samples from fifty-one male vegans and fifty-seven omnivores of similar age. Free T concentration was estimated by calculation, in comparison with the omnivores, the vegans had 7% higher total T (P = 0.250), 23% higher SHBG (P = 0.001), 3% lower free T (P = 0.580), and 11% higher E2 (P = 0.194). In a subset of eighteen vegans and twenty-two omnivores for whom 4 d diet records were available, there were statistically significant correlations between T and polyunsaturated fatty acids (r 0.37), SHBG and fat (r 0.43 for total fat, 0.46 for saturated fatty acids and 0.33 for polyunsaturated fatty acids), and SHBG and alcohol (r–0.39). It is concluded that a vegan diet causes a substantial increase in SHBG but has little effect on total or free T or on E2.

http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=868864

also a pubmed copy is here:

http://www.ncbi.nlm.nih.gov/pubmed/2400756


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THE SOY MYTH IS A KNOWN INTERNET HOAX:

The Soy Contains Estrogen false myth is a hoax piece that was concocted by a known front-group identified as the "WAPF" a.k.a. The Weston A. Price Foundation, a group that posts false and misleading health information which can potentially lead to health damage.

WITNESS THE GUARDIAN NEWS:  

Article: "Soy Scaremongering"
LONDON - "Most anti-soya stories can be traced back to one single group in the US called the Weston A Price Foundation (WAPF)..a US-based Fringe Organisation.. bent on citing scientifically flawed studies to promote their own agenda and has influenced a vast number of consumers, duping them"

"There were more than 40 scientific inaccuracies in the [WESTON PRICE] article, including the direct misquoting of scientific studies."

http://www.guardian.co.uk/commentisfree/2010/jul/01/anti-soya-brigade-ignore-scaremongering


Another individual caught pushing the false "soy myth" is identified as "Dr. Joseph Mercola" of of the quack supplement site known as articles.Mercola.com. Mercola also spreads the anti-soy hoax. Mercola is also an "honorary board-member" of the WAPF. Dr. Joseph Mercola has now been cited by FEDERAL AUTHORITIES for making fallacious health and/or medical product claims.

In other words, members of the WAPF, have been under investigation and have been cited for health and medical claim violations by enforcement authorities in the United States of America.

Here is an exact example of "Dr. Joseph Mercola" wherein this individual was caught making false claims not backed by scientific evidence and hit by federal authorities with a FEDERAL CITATION for making false health & medical product claims. Mercola spreads false articles on blogs, websites, syndicated blog feeds, and is sometimes picked up by Mens Health, and other lesser-educated magazines, quack diet blogs such as paleo diet and less-educated bodybuilding or 'fitness' sites that do not know that the Soy Myth and WAPF's articles and claims are dubious.

Federal Case Ref. No. CL-04-HFS-810-134 AGAINST JOSEPH MERCOLA OF THE WESTON A. PRICE FOUNDATION:
LOOK: http://www.casewatch.org/fdawarning/prod/2005/mercola.shtml


Joseph Mercola of Mercola Health Resources, and an honorary member of the WAPF who also spreads the soy estrogen myth has also had his Business Accreditation revoked by the BETTER BUSINES BUREAU.

http://www.bbb.org/chicago/new-business-reviews/health-and-diet-products-retail/mercola-health-resources-in-hoffman-estates-il-22002555

MERCOLA, who is a known pusher of the fake information on tofu, etc, has a rating of "F" (Fail), currently from the BBB, due to excessive customer complaints and reports of Mercola.com not properly treating their customers. Mercola often generates articles in order to sell people on the idea that they need to purchase supplements. By coincidence, Mercola just happens to sell those very pills, and is happy to sell them to you. When they don't work, and customers find out information in the articles was false as well, this has resulted in masses of customer complaints filed against Mercola, and has generated the F RATING from the U.S. Better Business Bureau.

http://www.fda.gov/ICECI/EnforcementActions/WarningLetters/2005/ucm076069.htm

NOTE: THE ABOVE IS AN OFFICIAL U.S. FEDERAL GOVERNMENT ENFORCEMENT SITE WITH INFORMATION ON WESTON PRICE SOY MYTH SPREADER JOSEPH MERCOLA.
This one reveals yet another violation by Joseph Mercola for other health claims besides soy. He has been involved in not just one, but multiple health claim violations.



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IT IS STEAK & MEAT THAT POTENTIALLY CONTAIN THE ACTUAL DANGEROUS FORM OF ESTROGEN:

Witness this fact at this image from Jeffers Livestock showing that beef is soaked with female mammalian estrogen:
http://img848.imageshack.us/img848/4937/synovexsestrogenestradi.jpg

IT IS MEN WHO HAVE BEEN EATING MEAT AND STEAK THAT MAY BE INGESTING FEMININE ESTROGEN.


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Fact Check finds the information in the answer given by the entity identifying themselves as "Diseaseproof" on this page to be factual. "Mens Health" mens magazine has been determined to be: False. "DiseaseProof" has been determined to be: Correct.


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