Normal A1C by age refers to the average blood sugar levels measured over 2–3 months, with normal values generally below 5.7%. For children and teens, especially those with diabetes, target A1C levels are often set below 7.5% to balance control and safety. Healthy adults usually aim for A1C levels under 5.7%, while those managing diabetes target below 7%. Older adults (65+) may have a ... https://thewebhealth.com/what-is-normal-hba1c-by-age/