Myths vs facts: Zink and Blutzucker

Zinc is an essential trace element involved in insulin synthesis, storage, and secretion. Observational studies suggest that zinc deficiency may impair glucose tolerance, and some meta-analyses of supplementation trials in people with type 2 diabetes show modest reductions in fasting blood glucose. However, the evidence is limited: effect sizes are small, study quality varies, and no large RCTs confirm a clinically meaningful benefit for the general population. Excessive zinc intake (>40 mg/day) can cause toxicity and copper deficiency. The MyBody-X DNA test does not include specific zinc-related genes for blood sugar; the markers mentioned (APOE, FADS1) relate to other pathways. Thus, the idea that zinc significantly lowers blood sugar is more myth than established fact. A balanced diet with zinc-rich foods (pumpkin seeds, beef) is advisable, but supplementation should only be considered under medical supervision.