Is Zink useful for Blutzucker?

The question of whether zinc is useful for blood sugar cannot be directly answered from the provided context. Zinc is an essential trace element involved in insulin synthesis and glucose metabolism. Some studies suggest a potential benefit of zinc supplementation in type 2 diabetes, but the overall evidence is mixed and not conclusive. The context does not include specific studies or guidelines on zinc and blood sugar. Instead, it highlights the limitations of DNA tests for supplement decisions: genetic tests indicate predispositions, not actual nutrient levels. Blood tests are more accurate for assessing needs. If zinc deficiency is suspected (e.g., due to poor wound healing or immune issues), a doctor should be consulted. Self-supplementation without confirmed deficiency is not recommended, as excessive zinc can be toxic. The evidence for a blood sugar effect in non-deficient individuals is weak. Therefore, the evidence grade is unclear. No relevant sources from the context are available.