Evidence check: Selen in the context of Sport

The provided context does not contain direct studies or specific information on selenium in sports. Generally, selenium is an essential trace element that acts as an antioxidant via selenoproteins (e.g., glutathione peroxidases) and supports thyroid function. In athletes, an adequate selenium status may theoretically aid recovery and reduce oxidative stress. However, robust evidence from randomized controlled trials for performance enhancement through supplementation in already replete individuals is lacking. Selenium deficiency is rare in Central Europe, and excess intake can be toxic. Therefore, the evidence level is unclear, as the given materials offer no relevant studies or guidelines. Consumers should not rely on blanket supplementation but consider individual status testing.