What role does Selen play in Blutzucker?

The provided knowledge contexts contain no information on the role of selenium in blood sugar regulation. Generally, selenium is an essential trace element that acts as a component of selenoproteins (e.g., glutathione peroxidases) with antioxidant functions and supports thyroid hormone metabolism. Some observational studies suggest a U-shaped relationship: both low and high selenium levels may be associated with impaired glucose metabolism and increased diabetes risk. However, the evidence is mixed, with many confounders, and no causal role has been firmly established. Consumer genetic or biomarker tests for selenium are not clinically validated for blood sugar prediction. Therefore, any claims about selenium directly affecting blood glucose should be viewed with caution.