Evidence check: FOXO3 in the context of Müdigkeit

The provided contexts contain no direct evidence linking FOXO3 to fatigue. FOXO3 is mentioned in one context as a possible component of a commercial longevity test, but without any data on fatigue. Mechanistically, FOXO3 is involved in stress resistance and cellular aging, but extrapolation to human fatigue is speculative. Evidence grade is 'unclear' or 'mechanistic'. Consumers should not base fatigue-related decisions on FOXO3 genetic results, as clinically relevant studies are lacking. Medical evaluation for fatigue is always recommended.