CGM for Non-Diabetics

Continuous glucose monitors (Dexcom Stelo, Abbott Lingo, Levels Health) are the wellness wearable story of 2025-2026. Stelo became OTC for non-diabetics. Here’s the honest take on whether they’re worth the $89/mo.

What they actually measure

Interstitial glucose (with a 5-15 min lag from blood glucose) every 1-15 minutes. Sensor lasts 14-15 days, pairs with phone via NFC + Bluetooth.

What you actually learn

• Your glucose response to specific foods (often surprising).
• Spikes from ostensibly “healthy” foods (oatmeal, smoothies, dates).
• How exercise blunts post-meal spikes.
• Stress and poor sleep raise baseline.

What you might not

• Personalized insights aren’t mostly news to anyone who’s read about insulin sensitivity.
• Optimization can become anxious and disordered for some users.
• For metabolically healthy non-diabetics, the gap between “average” and “optimal” is small.

Best for

• Pre-diabetics — concrete feedback drives behavior change.
• People with metabolic syndrome — reading food + behavior connection viscerally.
• Athletes optimizing performance — fueling + recovery insights.

Worth skipping if

• You’re metabolically healthy and already eat well — minimal new info, $89/mo.
• You have any disordered-eating history — the data feedback can entrench restriction.