Myths vs facts: HbA1c and Langlebigkeit

HbA1c is a key marker of average blood glucose over 2–3 months. Myth: A low HbA1c guarantees longevity. Fact: Optimal HbA1c (e.g., <7% in diabetics) reduces complication risk and may improve lifespan, but it is not a direct longevity test. Very low HbA1c can indicate hypoglycemia or other issues. Evidence linking HbA1c to longevity is strong for diabetic populations but moderate/unclear for healthy individuals. Lifestyle factors are more decisive. DNA tests claiming to predict HbA1c-related longevity are often marketing overclaims without clinical validation.