AMA #24: Deep dive into blood glucose: why it matters, important metrics to track, and superior insights from a CGM

My argument is the following: Lower average blood glucose is better. A hemoglobin A1c of 5.1 is better than a hemoglobin A1c of 5.5, even though neither of those people are anywhere near having type 2 diabetes.

The more you can minimize glucose variability, the better.

Type 2 diabetes has a definition, and it is defined as having a hemoglobin A1c concentration greater than 6.5%, and that corresponds to an average blood glucose... of approximately 130 mg/dL.

Hemoglobin A1c is a measurement that predicts average blood glucose. CGM actually gives you average blood glucose, and you can reverse engineer an imputed A1c.