Can Zöliakie Test help with Abnehmen?

A celiac test (HLA-DQ2/DQ8) can be indirectly related to weight changes, but it is not a weight-loss test. In undiagnosed celiac disease, malabsorption may cause weight loss; a gluten-free diet then often leads to weight gain. The genetic test has high negative predictive value: absence of DQ2/DQ8 makes celiac very unlikely. A positive result only indicates risk, not disease. Diagnosis requires antibody tests and biopsy. Someone without celiac suspicion who wants to lose weight will not benefit from this test. Evidence for the genetic prediction is strong, but the link to weight management is indirect and not clinically actionable. Marketing often overpromises. The test can be useful to rule out celiac in unexplained GI symptoms – but not as a diet tool.