Evidence check: HLA-DQ2 in the context of Langlebigkeit

HLA-DQ2 is a genetic marker strongly associated with celiac disease. In the provided contexts, there is no direct evidence linking HLA-DQ2 to longevity. Theoretically, undiagnosed celiac disease could impair health through chronic inflammation, malabsorption, and nutrient deficiencies, potentially reducing lifespan. However, this is speculative; robust human studies connecting HLA-DQ2 status to extended or shortened lifespan are lacking. The evidence level is therefore classified as unclear. Testing for HLA-DQ2 may be useful if celiac symptoms are present, but it should not be used as a longevity biomarker. Without clinical confirmation and medical guidance, no direct impact on life expectancy should be inferred.