Which benefit has glutamine shown promise for among athletes?

Glutamine is an amino acid that plays a significant role in various metabolic processes and cellular functions, and it has garnered attention for its potential benefits for athletes, particularly concerning immune function. Research suggests that during periods of intense training or heavy exertion, athletes may experience decreased levels of glutamine in their bodies, which can lead to a compromised immune system.

This is particularly relevant for those engaged in high-intensity and prolonged training, where the risk of infections and illness increases. Supplementing with glutamine may help restore levels of this amino acid, thus potentially aiding in the maintenance of a healthy immune system. Additionally, it is believed that glutamine can support gut health, which is closely linked to overall immune function.

While the other benefits listed, such as increasing muscle mass rapidly, enhancing cardiovascular endurance, and boosting fat loss, are often desired by athletes, the evidence supporting glutamine's effects in these areas is less conclusive compared to its promising role in supporting immune function. Therefore, its most notable benefit among athletes appears to be the enhancement of immune responses, making it a valuable consideration in their nutritional strategy.