A member asked:

How does soy affect testosterone?

A doctor has provided 1 answer
Dr. Alvin Lin answered

Jury is still out: Recall that soy (protein) has been recommended as an alternative to estrogen to treat menopause in women. In men, estrogen (estradiol) decreases testosterone production. Therefore, if a guy ingests a lot of something that increases estrogen in his body, this could potentially decrease testosterone level. So while this is conjecture, read your ingredient labels carefully!

Answered 4/19/2014

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Will soy protein in my hair shampoo lower my testosterone level?

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