New Research Disputes the Biggest Soy Myths (Food)

New research addresses myths surrounding soy intake in an article published in Critical Reviews in Food Science and Nutrition. The authors note that concerns over the safety of isoflavones, phytoestrogens found in soy products, were largely based on nonhuman animal studies that did not reflect human biology. Researchers reviewed 417 reports based on human data on isoflavone intake and endocrine-related health outcomes. Evidence suggests isoflavone intake does not adversely affect thyroid function, estrogen levels, ovulation in women, or semen levels in men. These publications also showed no negative effects in children. These results suggest neither isoflavones nor soy foods should be classified as endocrine disruptors associated with disease and adverse health outcomes. Soy products are actually associated with reduced risk of breast and prostate cancer.

Featured image credit: Getty images


References

Messina M, Mejia SB, Cassidy A, et al. Neither soyfoods nor isoflavones warrant classification as endocrine disruptors: a technical review of the observational and clinical data. Crit Rev Food Sci Nutr. 2021;1-57. doi: 10.1080/10408398.2021.1895054


Provided by Physicians Committee for Responsible Medicine

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s