Some experts believe the answer is yes.
Although a great deal is understood about female menopause, comparatively little is known about its male equivalent, andropause. In women, drastic reductions in levels of the female hormone estrogen trigger the well-known symptoms of menopause. In men, andropause occurs as the result of dwindling levels of the male hormone testosterone. But while estrogen levels take a quick nose- dive in menopausal women, the decline in male testosterone production is slow and progressive, making the symptoms of andropause harder to recognize in men. Starting at age 40, testosterone production in men begins to drop at a rate of about 1 percent per year.