What role does HbA1c play in Abnehmen?

HbA1c (glycated hemoglobin) is a long-term blood glucose marker reflecting average levels over the past 2–3 months. In the context of weight loss (Abnehmen), HbA1c can serve as an indicator of metabolic progress, especially in individuals with insulin resistance or prediabetes. Lowering HbA1c through weight reduction signals improved glucose control. However, HbA1c is not a direct measure of fat loss or caloric deficit. The evidence is moderate: numerous studies show weight loss reduces HbA1c, but the effect varies widely between individuals. Additionally, HbA1c is influenced by factors like anemia, kidney disease, or hemoglobin variants, complicating interpretation. Direct-to-consumer tests (e.g., MyBody-X) often include HbA1c measurements, but their clinical relevance for individual diet success is limited. For evidence-based weight loss, energy balance, macronutrient quality, and physical activity are key – HbA1c is a useful but not sufficient biomarker. Caveat: a normal HbA1c does not rule out metabolic issues, and an elevated value requires medical evaluation.