What is a healthy A1C level by age? A1C measures average blood sugar over the past 2–3 months and helps assess diabetes risk. A healthy A1C is typically below 5.7% for most adults. However, ideal levels can vary with age and health status. Children and younger adults managing diabetes may aim for A1C levels under 6.5%, while older adults—especially those with other health issues—may h... https://thewebhealth.com/what-is-normal-hba1c-by-age/