Is Zöliakie Test useful for Langlebigkeit?

Whether a celiac test is useful for longevity cannot be directly answered from the provided context. Celiac disease is an autoimmune condition triggered by gluten, leading to intestinal damage, nutrient malabsorption, and chronic inflammation—factors that could theoretically impact lifespan. However, the context covers other topics: a DNA test for antidepressants (CYP2D6/2C19, moderate evidence), an IgG food intolerance test (unclear evidence), and the FOXO3 longevity gene (human association). None of these provide specific data on the utility of celiac testing for longevity. Therefore, the evidence grade is 'unclear'. For individuals with symptoms (e.g., chronic digestive issues, fatigue, iron deficiency) or a family history, celiac testing is medically indicated. But for general longevity without clinical suspicion, there is no robust evidence to support routine testing. Genetic testing for HLA-DQ2/DQ8 can indicate predisposition but not active disease. Be cautious of marketing claims that overstate benefits.