1. Testosterone is produced in men’s testicles, women’s ovaries and the adrenal glands of both sexes. In the early weeks of pregnancy, it kicks off the development of reproductive organs for males.
2. After birth, testosterone plays a role in regulating processes from fat distribution to red blood cell production.
3. Long before the hormone was discovered, people ascribed youth-restoring powers to the testicles. Roman naturalist Pliny the Elder noted the sexually stimulating effects of dining on hyena genitals (with honey, of course).
