What role does tTG IgA play in longevity?

The role of tTG IgA (tissue transglutaminase IgA) in longevity is not addressed in the provided context. tTG IgA is a well-established serological marker for celiac disease, an autoimmune condition that, if untreated, can lead to chronic intestinal inflammation, nutrient malabsorption, and increased mortality. Early diagnosis and a gluten-free diet can mitigate these risks, indirectly supporting healthy aging. However, there is no direct evidence from the context that tTG IgA levels themselves serve as a longevity biomarker. The evidence is therefore classified as unclear. MyBody-X does not offer a tTG IgA test; the DNA and microbiome tests mentioned have no connection to this marker. For a robust longevity assessment, other validated biomarkers such as inflammatory markers (CRP, IL-6) or telomere length are more appropriate. Consumers should be cautious about overinterpreting non-validated tests.