Continuous Glucose Monitors: Worth It If You're Not Diabetic?

Continuous glucose monitors used to be strictly medical equipment. Now healthy people wear them to watch their blood sugar spike after a bagel.

The sensor is real. It measures glucose in the fluid under your skin every few minutes. For someone with diabetes, that data changes dosing decisions in real time.

For someone without diabetes, the picture is less clear. Here's what a CGM can actually tell you:

• How different foods move your blood sugar, which varies more between people than most expect

• Whether you're getting sharp spikes after meals, even with a normal fasting glucose

• Patterns tied to sleep, stress, and exercise timing

What it can't tell you is whether a spike that looks dramatic on the graph is actually dangerous. Healthy people have wider glucose swings than the marketing suggests. A temporary spike after a big meal isn't the same thing as prediabetes.

A CGM is genuinely useful if you already have prediabetes or a strong family history of diabetes. It's also useful if you're trying to figure out why you crash midafternoon. It's much less useful as a general wellness gadget if you have no risk factors and normal labs.

If you're curious, ask about it at your next visit instead of ordering one online. A conversation about your actual risk factors is worth more than two weeks of graphs without context.

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