Can Insulin help with Sport?

Insulin is a potent anabolic hormone that facilitates glucose uptake into muscle cells and promotes glycogen storage. Post-exercise, a small insulin dose could theoretically accelerate recovery by enhancing glycogen resynthesis and muscle protein synthesis. However, using insulin as a performance enhancer in sports carries serious risks: it can cause hypoglycemia, which may lead to loss of consciousness or even death if not carefully managed. Moreover, insulin is banned by WADA for athletes without a medical condition like diabetes. The evidence for a meaningful performance boost in healthy individuals is limited to small, short-term studies; the benefits are modest and do not outweigh the dangers. For most athletes, optimizing carbohydrate intake timing and overall nutrition is safer and more effective. Insulin should only be used under medical supervision for therapeutic purposes.