As men age, their testosterone levels decrease. This is a natural part of ageing, but it is not a necessary part. Sometimes, levels of this hormone begin fall too early in life, and sometimes it drops too low. This can cause undesirable or harmful effects. There are some products available to treat low testosterone, which is defined by the FDA as lower than 300 nanograms per deciliter of blood. There are seven signs that testosterone levels are lower than they should be.
Low Sex Drive. Many people know that testosterone is very important to the the sex drive of both genders. Many men are not bothered by some loss of libido as they get older, but a drastic decrease in sex drive can be disturbing to a man and his partner. Any reduction in libido that causes issues in a relationship is a medical problem and should be treated appropriately. The libido often returns to its previous state during treatment for low T, as long as that is the cause of the lowered sex drive to begin with.