Testosterone and Male Aging

Hopes for hormonal rejuvenation appear periodically throughout history?with the most prominent attempt occurring around the turn of the 20th century only to vanish in the 1930s following the discovery of testosterone, which discredited testis extracts and manipulations. In recent decades, there has...


About Robert Zinn

Robert Zinn, M.D., Ph.D. is a medical doctor, physician, and web entrepreneur, who, for over 15 years was employed by academic and research institutions and focused his clinical practices on very specialized patient populations, such as those with rare genetic diseases or rare cancers. He shares his knowledge through his website, NutritionTheory.org

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