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.
Testosterone is the hormone that makes men manly. It gives you a sex drive, helps your muscles to grow, and puts hair on your chest. Which is why men can find it alarming when their testosterone levels begin to naturally drop after the age of 30. The medical symptoms are numerous, including a lack of energy, motivation, and sexual desire â not to mention possible erectile dysfunction.