Testosterone is popularly known as the male hormone. This hormone turns a boy into a man; causes hair to sprout on chest and face and deepens the voice among a host of other physical and mental changes. Although testosterone is found in males and females, it is produced in much higher quantities in males and it plays a key role in developing male reproductive organs and gender-specific traits.
Most men hit the peak of their testosterone production around the age of 20. But after the age of 30, testosterone levels in men slowly start to decline. While a normal decrease will be around 1 per cent per year, some men’s testosterone production can decrease abnormally fast and lead problems with muscle and bone mass, sex drive, fat distribution, and even red blood cell production. Here are some of the common symptoms of low testosterone levels: