Is IgG useful for Blutzucker?

The question of whether IgG tests are useful for blood sugar (Blutzucker) management lacks scientific support. IgG antibodies against foods are commonly marketed in food sensitivity tests, but evidence linking them to blood glucose regulation is weak to nonexistent. Blood sugar is primarily controlled by insulin, glucagon, diet, and physical activity – not by IgG. Some marketers suggest that IgG-mediated inflammation could impair insulin sensitivity, but this is speculative and not backed by robust clinical trials. Standard blood sugar diagnostics include fasting glucose, HbA1c, and oral glucose tolerance tests. IgG tests are neither validated nor recommended for this purpose. Moreover, they carry risks of misinterpretation and unnecessary dietary restrictions. For improving blood sugar, evidence-based strategies like high-fiber diets, exercise, and weight management are far more effective. Evidence grade: marketing/unclear. Caveat: No validated clinical studies for blood sugar; high rate of false positives in IgG food tests.