Diabetes and obesity

Study finds continuous glucose monitors improve blood sugar control in type 2 diabetes

In a randomized trial, adults with type 2 diabetes not using insulin spent about five more hours each day in their target blood sugar range with CGMs.

Reported by 2 outlets Sunday, October 18, 2026

A blood glucose meter showing a reading
Photo: CC0

A randomized trial published in the New England Journal of Medicine found that continuous glucose monitors helped adults with type 2 diabetes who do not use insulin improve blood sugar control. Participants using a CGM spent approximately five more hours each day in their target blood sugar range than people receiving routine care. Medical Xpress reported that nearly twice as many CGM users reached an A1c below 7%. MedTech Dive reported average A1c levels fell from 8.8% to 7.2% in the CGM group and from 8.7% to 8% in the routine-care group.

The reports differ on the study size. MedTech Dive said 440 people were enrolled across 22 U.S. primary care practices, and reported 145 assigned to CGM and 138 to routine care. Medical Xpress described the trial as including 283 adults across 22 practices. Participants were followed for 26 weeks, according to Medical Xpress.

Dexcom is awaiting a decision from the Centers for Medicare and Medicaid Services on expanding Medicare coverage for people with type 2 diabetes, MedTech Dive reported. An analyst cited by the outlet said Dexcom expects a decision before the end of the year, with implementation in mid-2027.

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