How are tTG IgA and Abnehmen related?

tTG IgA (tissue transglutaminase IgA) is the primary serological marker for celiac disease, an autoimmune condition triggered by gluten. Elevated tTG IgA indicates active celiac disease, which, if untreated, damages the small intestinal lining, leading to malabsorption, nutrient deficiencies, and unintended weight loss or failure to gain weight. The link to 'weight loss' (Abnehmen) is indirect: in untreated celiac disease, weight loss can occur. After diagnosis and a gluten-free diet, antibodies typically normalize, and many patients regain weight. Conversely, in overweight individuals with celiac disease, a gluten-free diet may promote weight loss due to its nutrient-dense, whole-food nature. However, tTG IgA has no direct role in weight management for people without celiac disease. Consumer tests for tTG IgA exist, but positive results require medical follow-up (duodenal biopsy). Evidence: human-strong (celiac disease diagnostics).