Your CGM Is LYING to You (And It's Not Broken)

Ever had your CGM alarm go off in the middle of the night, telling you your blood sugar is dangerously low — only to feel completely fine? You're not alone, and you're not imagining it.

In this episode, Richie and Amber break down the truth about Continuous Glucose Monitors (CGMs): what they actually measure inside your body, why there's a natural delay between a finger-stick reading and a CGM reading, what a "MARD" score means for accuracy, and the very real emotional and physical burden of alarm fatigue that causes many people to give up on their devices altogether.

Amber shares a real clinical story about a "compression low" that fooled even an experienced diabetes professional, and Richie asks the grounded, relatable questions listeners are wondering too — like how many false alarms someone can experience before they simply stop trusting the device.

The conversation also covers Time in Range, glucose variability, trend arrows, and why two people can have the exact same A1C lab result while living two completely different day-to-day experiences with their blood sugar.

This is Part 1 of a CGM series — the next episode covers different CGM brands and insulin delivery systems.

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Need help NOW? You can email us at support@empowereddiabetes.com.

Take courage! You can do this, and we can help.

Chapters

00:00 - Introduction: Does Your CGM Really Measure Blood Sugar?
00:46 - Episode Disclaimer for Insulin Users
02:00 - The History of Blood Sugar Testing Before CGMs
05:29 - How CGM Data Changed the Doctor-Patient Relationship
08:24 - What a CGM Actually Measures (Interstitial Fluid Explained)
11:41 - Understanding MARD: How Accurate Is Your Device?
17:53 - Why Accuracy Matters More at Low Blood Sugar Levels
20:00 - A Real-World CGM Experiment: Wearing the FreeStyle Libre 3
26:29 - What Is a Compression Low and How to Spot One
28:20 - Hypoglycemia Unawareness Explained
32:08 - Alarm Fatigue: Why People Quit Using Their CGM
38:16 - Time in Range: A Better Diabetes Metric
41:36 - Normal Blood Sugar Physiology After Eating
44:44 - Debunking Blood Sugar "Spike" Fear on Social Media
47:21 - Time in Range Versus A1C: Key Differences
50:29 - Glucose Variability and Why Averages Can Be Misleading
53:34 - Understanding CGM Trend Arrows and Glucose Velocity
55:46 - Closing Thoughts and Next Episode Preview

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