Myths vs facts: HLA-DQ2 and longevity

HLA-DQ2 is a genotype strongly associated with celiac disease, not directly with longevity. Myths often claim that HLA-DQ2 carriers need a special diet for a long life. In reality, evidence for a direct link to lifespan is weak. HLA-DQ2 increases risk for celiac disease, an autoimmune condition that can cause nutrient malabsorption and inflammation if untreated. A gluten-free diet is only beneficial for those with diagnosed celiac disease or medical recommendation. Without diagnosis, it provides no proven longevity benefit. Most people with HLA-DQ2 never develop celiac disease. Therefore, it is a myth that HLA-DQ2 alone determines longevity. Facts: HLA-DQ2 is a genetic risk marker, not a longevity predictor. Evidence is mechanistic and observational, not from longevity intervention studies. Safety note: Unnecessary gluten-free diets can lead to nutritional deficiencies.