Continuous Glucose Monitors for Everyone: What the FDA’s OTC Approval Actually Means (And Doesn’t)

The Moment Everything Changed

For decades, continuous glucose monitors lived in the world of medical devices — prescribed to people with diabetes, covered by insurance, monitored by doctors. Then something shifted. In 2024, the FDA cleared two over-the-counter CGMs designed specifically for non-diabetic adults: Dexcom’s Stelo and Abbott’s Libre Rio. By 2025, these devices moved from specialty pharmacies into mainstream retail spaces. You can now walk into a store, buy a glucose monitor, and start tracking your blood sugar without ever seeing a healthcare provider.

This is genuinely significant. It’s also genuinely confusing. And because something new and health-related tends to attract myths faster than actual facts, I want to talk through what this actually means for you, especially if you’re thinking about trying one of these devices.

Access to information doesn’t automatically mean we know how to use it well. A tool in your hands is only as useful as your understanding of what the data actually tells you.

Why the Myths Started (And Why They Make Sense)

Here’s where I want to be gentle with you. When non-diabetic people started getting access to CGMs, certain narratives emerged quickly. Many people believed that if their blood sugar spiked after eating something labeled “healthy,” that spike alone was a problem. Others thought that any postprandial glucose reading above 140 mg/dL meant they were on the path to diabetes. Some started avoiding entire food groups based on personal glucose patterns they didn’t fully understand.

These myths spread because they feel logical. You have real data showing your body’s response to food. That feels like medical truth. And in some ways, it is truth, just incomplete truth, which is sometimes more dangerous than no data at all.

A 2025 Stanford Medicine study followed 7,000 non-diabetic CGM users and found something worth sitting with: 38 percent experienced glucose spikes above 140 mg/dL after eating foods they’d genuinely believed were healthful choices. Seeing that number appear on a screen in real time can feel alarming. But here’s what gets lost in translation: a single glucose spike after a meal in a non-diabetic person isn’t the same thing as chronic hyperglycemia. Your body has sophisticated mechanisms to bring that number back down. That’s partly what your pancreas does all day long.

What the Data Actually Says (And What It Doesn’t)

Let’s talk about what researchers have learned about postprandial glucose, that’s the fancy term for blood sugar after meals, in people without diabetes. According to the American Diabetes Association Standards of Care 2025, consistently elevated postprandial glucose above 140 mg/dL is associated with increased oxidative stress. That matters. Oxidative stress is real, and chronic inflammation from it contributes to aging and disease risk.

But here’s the critical distinction that often gets lost: one or two spikes don’t create chronic oxidative stress. The word “consistently” in that statement is doing a lot of work. We’re talking about patterns over time, not individual data points.

A 2025 JAMA Internal Medicine commentary from UCSF researchers raised a concern worth knowing about. They found that CGM use in non-diabetic people sometimes increases health anxiety rather than decreasing it. One survey found that 22 percent of non-diabetic CGM users changed their eating behaviors based on data they’d misinterpreted. That’s not necessarily because they’re careless. It’s because continuous glucose monitors are powerful tools that require some literacy to use well. Without that context, you can end up making choices that feel medically justified but are actually based on an incomplete picture.

The FDA OTC CGM clearance for Dexcom Stelo was a big deal partly because it democratized access, but also because it shifted responsibility. When a device requires a prescription, you have a doctor interpreting results with you. When it’s over the counter, that interpretation falls on you.

How to Actually Use CGM Data Like a Thoughtful Person

If you’re considering trying a CGM, here’s how to approach it in a way that genuinely serves your health instead of creating unnecessary stress. First, understand what you’re looking for: patterns, not perfection. You’re not trying to keep your glucose perfectly flat all day. That’s not how human bodies work, and trying to achieve it will exhaust you.

What patterns are actually meaningful? Notice which foods create dramatic, lingering spikes versus gentle rises that come back down quickly. Pay attention to how movement, stress, and sleep affect your numbers. Look at whether your postprandial glucose consistently stays elevated or whether it comes back to baseline within an hour or two. These patterns are real information about how your individual body responds to different inputs.

Cost matters for practical access, so it’s worth knowing: Dexcom Stelo currently retails for approximately 99 dollars for a 15-day sensor pack when purchased without insurance. That’s genuinely accessible compared to most health technology. But before you buy, ask yourself whether you have the time and emotional bandwidth to use the data well. Some people thrive with this kind of biofeedback. Others find constant monitoring creates a low-level anxiety that isn’t worth the insights gained. Both are completely valid responses.

Consider working with a healthcare provider or registered dietitian who actually understands non-diabetic CGM use. This is still relatively new territory, and having someone help you interpret patterns can keep you from falling into the misinterpretation trap that catches a lot of thoughtful people trying to optimize their health.

The Real Question Worth Asking Yourself

Before you order a CGM, pause and ask yourself what you’re actually looking for. Are you trying to understand your body’s response to different foods? That’s a valid reason. Are you searching for proof that you’re healthy? That’s a different reason, and a device might not actually deliver what you’re seeking.

Are you hoping that data will somehow replace the harder work of building sustainable eating and movement habits? That’s human and understandable, but it’s worth being honest about, because continuous glucose monitoring is a tool for understanding, not a substitute for actually making changes.

Glucose monitoring for non-diabetic people is still new enough that we’re all figuring out how to use it wisely. That means there’s room for curiosity, experimentation, and course-correction. It also means staying grounded in what the research actually says instead of what the anxiety-inducing narrative sounds like it says.

If you’ve tried a CGM or you’re thinking about it, I’d genuinely love to hear what your experience has been or what questions you have. This is the kind of health decision that deserves real conversation, not algorithm-driven recommendations.