Evidence check: HLA-DQ2 in the context of Blutzucker

The provided context contains no direct evidence linking HLA-DQ2 to blood sugar. HLA-DQ2 is a genetic marker strongly associated with celiac disease. Untreated celiac disease can cause intestinal damage leading to malabsorption, which might indirectly affect blood sugar levels – for example, through impaired nutrient uptake or secondary insulin resistance. However, this is not a direct, well-established effect. The context sources refer to microbiome or medication tests, not to HLA-DQ2 or blood sugar. Therefore, the evidence for a specific connection between HLA-DQ2 and blood sugar should be considered unclear or marketing-driven. Consumers should not rely on such tests to explain blood sugar issues. A doctor's visit and possibly a celiac screening are more appropriate.