In men, an awareness of the aging process typically begins sometime in the mid-to-late thirties. The masculine physique may then begin to fade as the abdomen protrudes slightly but surely, the formerly chiseled face softens, energy and sex drive decline, motivation wanes, and sleep goes from an afterthought to a dire necessity.

Well documented in the scientific literature is that the male aging process is associated with declining testosterone levels. It is also well established that testosterone plays a prominent role in many physiologic processes that impart good health. Testosterone's decline is associated with loss of muscle strength and bone density, declining sex drive, poorly sustained energy, and diminished emotional health---including poor mood and outlook or even outright depression.