Can HLA-DQ2 help with longevity?

The question of whether HLA-DQ2 can aid longevity lacks scientific support. HLA-DQ2 is an immune-system gene variant strongly associated with celiac disease, an autoimmune condition triggered by gluten. None of the provided contexts suggest any positive effect on lifespan. On the contrary, carriers face an elevated risk of celiac disease, which can lead to nutrient malabsorption and chronic inflammation if a gluten-free diet is not followed – factors that may shorten lifespan. Longevity is influenced by a complex interplay of lifestyle, environment, and genetic variants with larger effect sizes (e.g., SIRT1 polymorphisms mentioned in the context). A single HLA marker is not a predictor of longevity. Consumer DNA tests marketing HLA-DQ2 as a 'longevity gene' overstate the evidence. The clinical utility of HLA-DQ2 testing is limited to celiac disease screening. Without gluten-related symptoms, no action is warranted. In summary: HLA-DQ2 does not help with longevity; it is a risk marker that should be managed through diet if clinically indicated.