There is debate on whether male menopause, also called andropause, even exists. This stage refers to the drop in testosterone in men. However, the drop is not universal. A drop does happen in some men, and mostly after age 60. About 20 percent of men in their 60s, and as many as 50 percent of men in their 80s, go through such a drop in hormones. Men can feel a drop in energy, increased fatigue, low mood, as well as difficulty with sleep.