What to watch with HLA-DQ2 and fatigue?

HLA-DQ2 is a genetic risk factor for celiac disease, an autoimmune condition triggered by gluten. Fatigue is a common but non-specific symptom of celiac disease, often resulting from iron-deficiency anemia, vitamin B12 deficiency, or chronic inflammation. However, about 30 % of the population carries HLA-DQ2, and most never develop celiac disease. Therefore, the presence of HLA-DQ2 alone does not confirm active disease. If you have persistent fatigue and know you carry HLA-DQ2, watch for other celiac symptoms (e.g., diarrhea, bloating, weight loss, skin rash) and consider testing for celiac antibodies (tTG-IgA) and duodenal biopsy. Also evaluate other causes of fatigue (thyroid disorders, sleep issues, stress, nutrient deficiencies). The evidence linking HLA-DQ2 to celiac disease is strong (human-strong), but fatigue alone is not specific. A gluten-free diet without a confirmed diagnosis is not recommended, as it can be unnecessarily restrictive and may mask other deficiencies. Seek medical advice before making dietary changes.