Testosterone replacement therapy (TRT) is a type of hormone therapy that can help men who have low levels of testosterone. By supplementing the body's natural production of testosterone, TRT can improve symptoms such as fatigue, depression, and low sex drive. In addition to improving symptoms, TRT may also have other potential health benefits. However, it is important to discuss the risks and benefits with a healthcare provider before starting treatment and to undergo regular monitoring while on TRT. This article explores what TRT is, how it works, and its potential benefits and risks.