Testosterone therapy may help reverse the effects of hypogonadism, but it's unclear whether testosterone therapy is beneficial for healthy older men.
Although some men believe taking testosterone medications makes them feel younger and more energetic, there is little evidence to support the use of testosterone in healthy men. Guidelines from the American College of Physicians indicate that testosterone therapy may improve sexual function in some men to a limited extent, but there is little evidence that it improves other functions such as vitality and energy.