♦ Genetic males produce progesterone, but about half the amount of females. Progesterone is made in men by the adrenal glands and testes. Progesterone is vital to good health in both women and men.

♦ During the aging process, progesterone levels fall in men, especially after age 60. Progesterone is the chief inhibitor of an enzyme called 5-alpha reductase that is responsible for converting testosterone to dihydrotestosterone (DHT).

♦ When the level of progesterone falls in genetic males, the amount of conversion from testosterone to DHT increases.