Evidence check: HbA1c in the context of Fruchtbarkeit

HbA1c (glycated hemoglobin) is a long-term blood glucose marker reflecting average levels over 2–3 months. In the context of fertility, evidence suggests that elevated HbA1c—even in non-diabetic ranges—may be associated with reduced fertility. In women, higher HbA1c is linked to PCOS, impaired oocyte maturation, and implantation failure. In men, it correlates with lower sperm quality (motility, DNA fragmentation). However, the evidence is moderate: most studies are observational, and causality is not firmly established. HbA1c alone is not a fertility test; it is a risk marker. MyBody-X includes HbA1c in the Men's Wellness Check, but not as a dedicated fertility panel. Interpretation requires clinical context (age, BMI, hormone levels). A normal HbA1c does not rule out fertility issues, and an elevated value warrants medical evaluation. Caveat: Evidence is based on population associations, not RCTs targeting fertility improvement via HbA1c reduction. Thus, individual predictive value is limited.