What role does FADS1 play in blood sugar?

FADS1 encodes delta-5 desaturase, a key enzyme in polyunsaturated fatty acid (PUFA) metabolism. By modulating omega-3 and omega-6 ratios, FADS1 can indirectly influence inflammatory pathways and insulin sensitivity. Some genome-wide association studies have linked FADS1 variants to fasting glucose and insulin resistance. However, the evidence is largely mechanistic and insufficient for clinical recommendations. Direct causal effects on blood sugar are not established; FADS1 likely acts in concert with dietary PUFA intake. Caveat: Genetic contributions are small; lifestyle and overall diet are far more impactful on glycemic control. A DNA test alone is not diagnostic for blood sugar issues.