Evidence check: Zöliakie Test in the context of Langlebigkeit

The question of a celiac test in the context of longevity is scientifically challenging because the provided knowledge contexts contain no direct evidence. Celiac disease is an autoimmune condition triggered by gluten, leading to intestinal inflammation, malnutrition, and increased mortality if untreated. Early testing (blood anti-tTG antibodies, possibly duodenal biopsy) can diagnose the disease and, through a gluten-free diet, prevent complications. However, evidence for a direct impact of such testing on longevity is weak: no randomized trials show that screening asymptomatic individuals extends lifespan. Genetic tests (HLA-DQ2/DQ8) indicate predisposition, not disease. The link to longevity is indirect—via avoiding complications like lymphoma or osteoporosis—but not proven. Therefore, the evidence level is 'unclear'. Consumers should understand that a positive genetic test is not a diagnosis and requires medical follow-up.