For an A1C level of 13%, the average glucose level is 326 mg/dL. For an A1C level of 14%, the average glucose level is 355 mg/dL. Do not use your analysis to diagnose yourself with diabetes.

DEAR DR. ROACH: I am a healthy 63-year-old woman. I walk or do the elliptical four to five times per week for 30-40 minutes, and I also do strength training at the gym three times per week.

No, not that number, your A1C. Your A1C measures the amount of sugar in your red blood cells and gives an average of your blood sugar over a three-month period. Why is that important? After all ...

You can lower your A1C level with changes to diet, exercise, and other habits. For some people, medication may also help. Diabetes is a serious, chronic condition that can lead to many ...

C. Ronald Kahn, M.D. President and Director, Joslin Diabetes Center What is the A1c blood test? The hemoglobin A1C test is a measure of what we call long term glucose control. The way this works ...