Do you gain weight on testosterone FTM?

Could you please clarify what you mean by "FTM" in the context of gaining weight on testosterone? Assuming FTM refers to female-to-male transgender individuals, the answer to your question is not straightforward. Testosterone can play a role in weight gain or loss for FTM individuals undergoing hormone therapy, but it's important to note that many factors influence weight changes, including diet, exercise, and individual physiology. Some FTM individuals may experience weight gain due to changes in muscle mass and water retention, while others may not. It's important to consult with a healthcare provider to understand how testosterone therapy may affect your weight and overall health.