Testosterone is a hormone that affects sex drive, bone and muscle mass, fat storage, and more. Learn about the causes and effects of low or high testosterone levels, and how to test and treat them. Testosterone , the primary sex hormone in men, is responsible for many physical characteristics that are considered masculine. Produced by the pituitary gland, testosterone sends signals to the ... Testosterone is a sex hormone that stimulates male characteristics and affects health in various ways. Learn about testosterone production, measurement, and problems with low or high levels. Testosterone is often called the “male” hormone. However, both men and women produce this hormone. Hormones are molecules that regulate the body. They are usually produced in one location in ...
