Low testosterone, or low T, is a medical condition in which the body does not produce enough testosterone to function normally. Those suffering from low testosterone levels, resulting in low energy, muscle loss, a thickening waistline, and a decrease in sexual drive, can experience a reversal of these symptoms when they receive TRT treatment. The hormone testosterone (T), produced in the testes, is involved in nearly every aspect of metabolism. Each year, men over 30 produce about 1 percent less testosterone, which leads to erectile dysfunction, decreased sex drive, decreased muscle mass, bone loss, increased body fat, increased blood sugar, high cholesterol, less energy, depression, poor sleep, and anxiety. The drop in testosterone is known as hypogonadism, which is also known as Low T. Many diseases and conditions can cause this drop in testosterone, but testosterone replacement can improve health and reverse these symptoms.