Soy -- part of a heart-healthy diet -- found to have no impact on testosterone levels
A comprehensive meta-analysis of prior scientific literature was performed to determine whether soy protein and soy isoflavones affect male reproductive hormone levels. Led by Jill M. Hamilton-Reeves of St. Catherine's University in St. Paul, MN, the researchers examined a variety of clinical studies conducted prior to July 1, 2008, which looked at the effect of soy, which contain phytoestrogens, on male reproductive hormones. In total, the investigators analyzed 15 placebo-controlled treatment groups with baseline and ending measures. In addition, they assessed 32 reports involving 36 treatment groups in simpler statistical models. Their research, which has recently published online in Fertility and Sterility, showed no significant effect of soy protein or soy isoflavone intake on circulating levels of testosterone, sex hormone-binding globulin or free testosterone in men.
"As a high-quality source of protein that is relatively low in saturated fat, soy can be an important part of a heart-healthy diet and may contribute to a decreased risk of coronary heart disease," says reproductive endocrinologist William R. Phipps of the University of Rochester Medical Center, a co-author of the analysis. "Some men have avoided soy-based foods because of worries about estrogen-like effects of soy isoflavones. But it is important for the public to understand that there is no clinical evidence to support these ideas. After conducting a comprehensive review of the existing literature, we found no indication that soy significantly alters male sex hormone levels."
Citing the research study, Lisa Kelly, MPH, RD, of the United Soybean Board, says, "Soy is often praised for the positive role it can play in the diets of women. But, years of clinical research have shown that men stand to benefit from soy, too. I encourage men to incorporate soyfoods into a balanced and varied diet and talk to their healthcare provider about their own unique nutritional needs."
News Release: Soy safe for men: study www.gourmetretailer.com July 26, 2009
Health Headlines
upcoming Events
U.S. Events
congresses
fellowships
-
Aesthetic Medicine Module I
Las Vegas, NV | Dec. 9-10, 2009 -
Anti-Aging & Regenerative Medicine Modules I, II, III & IX
Las Vegas, NV | Dec. 10-12, 2009 -
Preventative Medicine, Nutrition & Sports Medicine Module I
Las Vegas, NV | Dec. 9-11, 2009 -
Fellowship in Preventative Medicine, Nutrition & Sports Medicine Module III
Las Vegas, NV | Dec. 11-12, 2009
symposium
-
Advanced Hormone Symposium
Chicago, IL | Oct. 8-10, 2010
VIDEO: Brain Age Workshop
Dr. Eric Braverman, Director of The Place for Achieving Total Health
(PATH Medical), Chairs the
Brain Age Workshop taking place Dec. 9, 2009.
Held in conjunction with the Winter Session of the 17th Annual World
Congress on Anti-Aging Medicine & Regenerative Biomedical Technologies.
The Brain Age Workshop features presentations on Brain Mind Assessment
via Neuropsychological Analysis, Movement Deficiency Syndrome,
Hormones and the Brain, Nootropic Drug Mechanisms, and Traumatic Brain
Injury. View this video to learn about Dr. Braverman’s brain-based
model of aging and age modulation.
International Events
- Mexico City | Jan. 15-17, 2010
- Milan | Mar. 18-20, 2010
- Kuala Lumpur | Apr. 29 - May 2, 2010
- Jakarta | May 2010 (pending)
- Bucharest | May 2010 (pending)
- Seoul | May 2010 (pending)
- Melbourne | Aug. 21-22, 2010
- Dubai | Oct. 26-27, 2010
- Bali | October 2010 (pending)
- Mainz-Frankfurt | Nov. 8-10, 2010
- Sao Paulo | Nov. 12-14, 2010
- Shanghai | November 2010 (pending)





