Medscape April 15, 2025
Continuous glucose monitoring (CGM) devices may overestimate blood glucose levels in healthy adults, potentially leading to unnecessary dietary changes and confusion among users, according to a recent study published in The American Journal of Clinical Nutrition.
Researchers at the University of Bath in Bath, England, evaluated glycemic responses in healthy volunteers with normal body mass index using two methods: A CGM device (Abbott Freestyle Libre 2) and the standard finger-prick test for capillary blood glucose.
Participants — nine women and six men with an average age of 34 years — wore a CGM device, and capillary samples were collected every 15 minutes over a 2-hour period. During this time, they consumed 50 g of glucose from different carbohydrate sources.
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