What role does HbA1c play in menopause?

HbA1c (glycated hemoglobin) is a long-term blood glucose marker reflecting average levels over the past 2–3 months. During menopause, declining estrogen levels can reduce insulin sensitivity and impair glucose tolerance, increasing the risk of type 2 diabetes and metabolic syndrome. HbA1c is therefore used for early detection and monitoring of glucose metabolism disorders in menopausal women. However, HbA1c is not a standalone indicator: factors like anemia, kidney function, or hemoglobin variants can affect results. The evidence linking menopause to elevated HbA1c is human-strong, based on epidemiological studies and clinical guidelines. An HbA1c ≥ 6.5% (48 mmol/mol) indicates diabetes, while 5.7–6.4% indicates prediabetes. Regular monitoring is advisable for menopausal women, but interpretation must be in clinical context. Caveat: home HbA1c tests provide useful orientation but do not replace medical diagnosis.