Wendie Trubow, MD, MBA, IFMCPPresident at Five Journeys, Functional Medicine & Wellness Provider, Best Selling Author, Passionate Champion for Health

Understanding CGM and How It Works

4 Mar 2026 · 1 min

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0:34

In this brief explanatory segment, Dr. Wendie Trubow defines a continuous glucose monitor (CGM) as a device that replaces traditional finger‑stick glucometers. She explains that once a CGM sensor is applied, it continuously measures glucose levels and transmits the data to a smartphone, allowing users to view real‑time blood sugar readings at any moment. The speaker emphasizes that CGMs are especially valuable for people who take insulin, because they can instantly see how meals, fast‑acting or long‑acting insulin, and other factors affect their glucose, enabling more informed management of diabetes.

Chapters

What is a cgm and why should they care? Yeah, so CGM is continuous glucose monitor. So it's kind of taken the place of the old glucometer, where someone had to poke their finger every morning. Nobody likes that. But now with the cgm, it goes on there and it's there all. Once it's on, it's on. And it links to your smartphone. Right. And so you can check your blood sugar in real time anytime you want, especially for people that, again, are taking insulin, where they got to take, you know, some fast acting, slow acting. Look what they're eating. Everything. And they can really see on their smartphone what they're eating, how it affects their blood sugar in real time.