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Does consuming soy affect male hormones?

Ask an Expert: Karina Inkster

Phytoestrogens are found in some plants, including hops (a main ingredient in beer) and soy. Phytoestrogens do not affect our bodies the way mammalian estrogen does.

I’ll let Susan Levin, director of nutrition education for the Physicians Committee for Responsible Medicine, answer this one:

“Soy products have no adverse effects on men and may help prevent cancer in men. A meta-analysis based on more than 50 treatment groups showed that neither soy products nor isoflavone supplements from soy affect testosterone levels in men. An analysis of 14 studies published in the American Journal of Clinical Nutrition showed that increased intake of soy resulted in a 26 per cent reduction in prostate cancer risk. Researchers found a 30 percent risk reduction with nonfermented soy products such as soy milk and tofu.”

Karina Inkster is a qathet region health and fitness coach, author of five books, and host of the No-B.S. Vegan podcast.

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