A celiac disease test (HLA-DQ2/DQ8 genotyping) has no direct relationship with sleep. However, untreated celiac disease can impair sleep quality through symptoms like abdominal discomfort, nutrient deficiencies (iron, B12, vitamin D), or systemic inflammation. Observational studies report higher rates of sleep disturbances in celiac patients, which often improve on a gluten-free diet. The test itself does not measure sleep. Evidence is human-observational but not specific to the test. Caveat: a positive genetic risk does not guarantee sleep issues; many carriers remain asymptomatic. Clinical diagnosis (serology + biopsy) is key. For better sleep, focus on general sleep hygiene and treating celiac disease if diagnosed, not on the genetic test alone.
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