Evidence check: FADS1 in the context of Blutzucker

FADS1 encodes delta-5 and delta-6 desaturases, key enzymes in polyunsaturated fatty acid metabolism. Genome-wide association studies (GWAS) and observational research have linked certain FADS1 variants to fasting glucose levels and insulin resistance. However, effect sizes are small, and the evidence is moderate (human-moderate). Mechanistic pathways involving membrane fluidity and inflammation are plausible but lack confirmation from interventional trials. Consumer DNA tests may report FADS1 variants, but their clinical utility for blood sugar management is limited. A diet rich in omega-3 fatty acids is generally beneficial regardless of genotype. Caution is advised against overinterpreting genetic results without professional medical guidance.