Is Zöliakie Test useful for longevity?

A celiac test (e.g., HLA-DQ2/DQ8 or antibody panel) is primarily a diagnostic tool for celiac disease, an autoimmune condition triggered by gluten. For longevity in the general asymptomatic population, it is not a standard screening test. However, undiagnosed celiac disease can lead to chronic inflammation, nutrient malabsorption (iron, vitamin D, B12), and increased risks of osteoporosis, lymphoma, and other autoimmune disorders, potentially shortening healthspan and lifespan. Therefore, in individuals with symptoms (e.g., bloating, fatigue, anemia) or family history, testing can indirectly support longevity by enabling early diagnosis and a gluten-free diet. Evidence for population-wide screening is weak; guidelines recommend testing only in high-risk groups. Direct-to-consumer genetic tests often include celiac risk markers, but these are not diagnostic and may cause unnecessary worry or false reassurance. In summary, a celiac test is useful for longevity only in a targeted context—not as a general longevity biomarker.