It is normal for testosterone levels to drop as a man ages. However, low testosterone can negatively affect his health. Testosterone is the hormone that makes men men. The increase in testosterone in boys at puberty helps the formation of muscles and bones, changes in voice and sexual desire depend on it. Testosterone is reflected in every aspect, even in his behavior and decision-making. Testosterone levels begin to decline gradually after the age of 40. Unlike female menopause, when estrogen levels drop over months, male andropause lasts for years. The changes are permanent for a long period of time, so the man does not feel the process – the testosterone level drops by 1 to 2% per year. Exceptions are cases in which the testosterone level does not correspond to age norms. How to tell if low testosterone is normal for age or due to a health problem? Low testosterone is proven by laboratory testing. A blood concentration below 300 nanograms per deciliter is considered low testosterone. Symptoms of low testosterone: decreased sex drive, erectile dysfunction, mood swings, low mood, fatigue, sleep problems. When testosterone is below the age reference range, treatment is prescribed. The forms of its acquisition are different: daily application of gel, use of patches, tablets or in the form of injections. The goal is to compensate for the lack of testosterone to the age-normal level. Continuation of the topic