Origin and Etymology of is. Middle English, from Old English; akin to Old High German ist is (from sÄ«n to be), Latin est (from esse to be), Greek esti (from einai to be)
For the medical journal, see Menopause (journal). Menopause, also known as the climacteric, is the time in most women's lives when menstrual periods stop permanently, and they are no longer able to bear children. Menopause typically occurs between 49 and 52 years of age.
Low libido in men or low sex drive is a common symptom of andropause. Just as low levels of testosterone can inhibit erectile function, testosterone has a strong effect on sex drive in men. In a man's brain there exist testosterone stimulating nerves. Sex drive in men starts with the release of testosterone which stimulates the receptors in the brain to release nitric oxide.