Penis size: You may notice that it doesn’t seem as large as it used to.
Pubic hair: Like the hair on the rest of your body, it will thin and may turn gray. This sticks to the testosterone in your blood and lowers the amount your body has available to use.Īs testosterone levels fall, you’ll notice other changes to your: But your body slowly begins to make more of a protein called sex hormone binding globulin (SHBG). The amount of testosterone in your body may drop slightly in your late 20s through your 40s, but the change is minimal.Īfter 40, your total levels may drop only a small amount. Testosterone levels peak in your late teens to early 20s. Your testes (testicles), scrotum, penis, and pubic hair all begin to grow. Somewhere between the ages of 9 and 15, your pituitary gland releases hormones that tell your body to start making testosterone. Each phase is controlled mostly by your testosterone levels. Like everything in nature, your penis goes through a series of changes over your lifetime.
