In men, mid-life hormone changes usually begin without notice, especially after the age of forty. Unfortunately, the only obvious result may be the gradual assumption of the appearance of “an old man.” Andropause, a condition in which the testosterone level slowly declines with age, also decreases a man’s ability to enjoy sex. In addition to experiencing a decrease in sexual desire and erectile function, men with a lowered testosterone level may also notice changes in mood and emotions, a decrease in body mass and strength due to loss of muscle tissue, and an increase in body fat. Finally, the worst outcome may be alterations in bone mineral density, a condition called osteoporosis, which can lead to severe bone changes and even to fractures. These mid-life hormonal changes can be offset through the use of Testosterone boosters.