Is FUT2 useful for Blutzucker?

The FUT2 gene (e.g., rs601338) determines secretor status and has been linked to gut microbiota composition. Some studies report associations with fasting glucose and type 2 diabetes risk, but effect sizes are small and not clinically actionable. A consumer DNA test for FUT2 is of limited use for blood sugar management. Evidence is human-moderate, but the predictive power is weak. Lifestyle factors such as diet, exercise, and weight control have a much larger impact. Therefore, while FUT2 may offer a minor piece of the puzzle, it is not a reliable tool for personalized blood sugar recommendations. Always consult a healthcare provider for metabolic health concerns.