By Dr. Liji Thomas, MD Reviewed by Benedette Cuffari, M.Sc. Mar 4 2025 New research compares CGM and capillary blood glucose measurements, revealing key discrepancies in tracking glycemic responses to food. Study:  Continuous glucose monitor overestimates glycemia, with the magnitude of bias varying by postprandial test and individual – A randomized crossover trial . Image Credit: goffkein.pro / Shutterstock.com In a recent study published in The American Journal of Clinical Nutrition ,