Why are people with T1D regularly asked to measure their hemoglobin A1C?

The duration of diabetes and the quality of blood sugar control affects the likelihood that one would develop complications such as retinopathy and nephropathy. Retinopathy is caused by a damage to the blood vessels of the tissue at the back of the eye (retina). It might show no symptoms or only mild vision problems.  However, … Read moreWhy are people with T1D regularly asked to measure their hemoglobin A1C?