What role does HbA1c play in Blutzucker?

HbA1c (glycated hemoglobin) is a well-established biomarker reflecting average blood glucose levels over the preceding 8–12 weeks. It forms when glucose binds non-enzymatically to hemoglobin and is used clinically to diagnose and monitor diabetes (≥6.5% indicates diabetes). The evidence is strong, based on large human studies and clinical guidelines. However, HbA1c has limitations: it can be affected by hemoglobin variants, anemia, kidney disease, and pregnancy. Consumer tests like MyBody-X may offer HbA1c measurement, but results should be interpreted by a healthcare professional. HbA1c does not capture short-term glucose fluctuations or postprandial spikes. For a comprehensive assessment, combine with fasting glucose, oral glucose tolerance test, or continuous glucose monitoring. Genetic variants (e.g., in GCK, TCF7L2) can modulate individual risk, but HbA1c remains the clinical gold standard. Caution: borderline elevations may be lifestyle-related and not necessarily pathological. Always confirm with a physician before making treatment decisions.