This Is the Blood Glucose Monitor We've Been Waiting For

"The wearables industry has solved the relatively easy stuff: step counting, sleep tracking, fitness coaching. It has also solved more complex things like detecting atrial fibrillation and sleep apnea. While all of these biometrics are useful, the continuous tracking of blood sugar in a way that's noninvasive (meaning it doesn't involve needles) has eluded the makers of fitness tracking devices."

"since monitoring blood sugar usually requires a pinprick blood test or a continuous glucose monitor (CGM), which also reaches under the skin. CGMs have also become hugely popular among non-diabetics as the popularity of GLP-1s has skyrocketed. Eating like a diabetic-lots of protein and fiber, minimal sugar and carbs-is a great way to lose weight. Apple, among other companies, has spent years, and millions of dollars, trying to introduce a no-prick blood glucose monitor to the Apple Watch, but the feature hasn't arrived yet."

"All this is to explain why I could scarcely believe that the PreEvnt Isaac was real when I saw it here at CES 2026 in Las Vegas. The Isaac is a small device, about the size of a quarter. Instead of tracking blood glucose optically through the skin, it measures volatile organic compounds in your breath to detect biomarkers like acetone that can be correlated with rising blood glucose levels."

Wearables have achieved accurate step counting, sleep tracking, fitness coaching, atrial fibrillation detection, and sleep apnea detection. Continuous noninvasive blood glucose monitoring remains unresolved for fitness devices because current methods use pinprick tests or under-skin CGMs. Diabetics require ongoing glucose monitoring to prevent organ damage, and monitoring is especially difficult for elderly people and small children. CGMs have become popular among non-diabetics as GLP-1 use and dietary strategies increase interest in glucose data. The PreEvnt Isaac measures volatile organic compounds in breath, detecting biomarkers like acetone that correlate with rising blood glucose and enabling a small, carryable form factor for daily use.

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