What to watch with Selen and Blutzucker?

The question about selenium and blood sugar (Blutzucker) involves a complex interplay. Selenium is an essential trace mineral, acting as a cofactor for selenoproteins like glutathione peroxidases, which have antioxidant functions. Some observational studies suggest a U-shaped relationship: both deficiency and excess (e.g., from supplements) may increase diabetes risk. However, evidence is mixed, and robust randomized controlled trials are lacking. MyBody-X DNA tests may analyze variants in genes such as SEPP1 or GPX1, which influence selenium metabolism. Yet the clinical utility of such SNP-based advice for blood sugar control is minimal. Proven lifestyle factors – diet, exercise, weight management – remain far more impactful. Caution with selenium supplements: the tolerable upper intake level is 400 µg/day (EU). Higher doses can cause toxicity (hair loss, nail changes). For blood sugar concerns, consult a physician rather than relying solely on genetic test results.