Is FADS1 useful for Müdigkeit?

FADS1 encodes an enzyme critical for converting plant-based omega-3 (ALA) into the active forms EPA and DHA. Certain variants reduce conversion efficiency, potentially leading to lower EPA/DHA levels. Since these fatty acids support anti-inflammatory pathways and brain function, a deficiency could theoretically contribute to fatigue. However, the effect of a single FADS1 variant on real-world fatigue is small and often overshadowed by diet, lifestyle, and other genetic factors. A DNA test can offer clues but is not a substitute for directly measuring omega-3 status via blood tests. Evidence: mechanistic/GWAS. Caveat: fatigue is multifactorial (iron, sleep, stress, thyroid). A comprehensive workup is more reliable.