Men experience an annual decline in their hormone levels beginning in their mid twenties. Andropause, often referred to as male menopause, is a result of low testosterone levels throughout the body. In a 2007 study, nearly 40% of men over age 45 had low testosterone levels when tested at their doctor’s office. Many doctors still do not routinely test testosterone levels. The depleted testosterone levels cause a number of symptoms which look similar to what women experience during menopause, and which occur slowly instead of suddenly as in women.