- - There is a lot of discussion surrounding testosterone therapy and whether it can lead to weight gain and potential belly fat. Some people believe that because testosterone is a hormone that regulates metabolism and body composition, taking it could cause you to put on weight. However, there is no definitive answer as to whether this is the case. In this article, we will take a look at the evidence surrounding testosterone and weight gain, and try to conclude whether or not it does make you gain weight. The Relationship between Testosterone and Weight Gain Weight [...]