What to watch with FUT2 and Langlebigkeit?

The provided context does not directly address FUT2 and longevity. Generally, FUT2 variants (secretor status) influence gut microbiome composition and vitamin B12 absorption. Some research suggests non-secretors may have lower B12 levels and altered immune responses, which could indirectly affect longevity. However, evidence is mostly mechanistic and not strong enough for firm recommendations. MyBody-X DNA tests can determine FUT2 status, but interpretation regarding longevity should be cautious. B12 deficiency or unfavorable gut flora are better assessed via direct biomarkers (blood test, microbiome). Beware of overblown claims: longevity research is complex and multifactorial.