Guide

Using a CGM in reactive hypoglycemia helps you spot post-meal lows early and adjust food, activity, and treatment with your care team.

Continuous glucose monitoring can help track low blood sugar without diabetes, but it needs careful use, clear goals, and medical guidance.

Apple Watch works with Dexcom G7, FreeStyle Libre 2 and 3, and other CGMs through their iPhone apps, watch apps, or Dexcom G7 direct-to-watch mode.

No, most non-diabetics do not need CGM, though some high-risk or data-focused users may gain insight when they work with a health professional.

Several major CGMs work with Android phones, including Dexcom G7, FreeStyle Libre systems, Medtronic Guardian, and Eversense on compatible models.

No, current CGM devices track glucose in interstitial fluid only; they can’t measure ketone levels, so separate ketone tests are still needed.

Yes, Medicare covers continuous glucose monitors for people with diabetes who meet specific medical and coverage criteria.

CGM supplies can run through pharmacy or DME; the best route depends on your insurance design, out-of-pocket costs, and how you like to refill.

CGM closed-loop systems link a sensor, pump, and algorithm to adjust insulin automatically and keep glucose closer to your target range.

A CGM with insulin pump combined system links sensor, pump, and software to automate insulin dosing and smooth daily glucose control.