The phenomenon of the biological clock isn’t exclusive to women, it seems men also are prone to age-related changes in hormone levels, sexual function, physical features, and quality of life. These changes, dubbed “andropause” (and sometimes “male menopause”) are due to a progressive decrease in testosterone production. As men near middle age, the process speeds up and so may the frequency and effect of the symptoms. Common symptoms include fatigue, reduced muscle mass, erectile dysfunction, loss of libido, and even depression.
Occurrence and Background
How common is andropause? Baylor College of Medicine reports that at least 30% of men 60-70 years of age and 70% of men 70-80 years of age have low testosterone levels.  Although the root cause of reduced testosterone availability is decreased testicular function, pituitary problems may also be a factor.  While andropause is a fairly new term, the concept is not. In China, observations have been reported for over 50 years. This post was originally published on this site