While smartwatches and scales estimate body fat percentage, tracking active fat burning in real time has long required lab equipment. A new study in Device highlights a handheld breathalyzer that pinpoints the exact moment your metabolism shifts into fat-burning mode.
Key Takeaways:
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Tracks Breath Acetone: When entering ketosis, your body releases acetone into your breath. Researchers led by Andreas Güntner at ETH Zurich created a chemical sensor that filters out humidity and contaminants to measure acetone accurately.
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App-Guided Accuracy: A companion app guides breathing speed and pressure, matching the accuracy of gold-standard lab tests and blood ketone monitors.
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Non-Invasive Solution: Commercialized as Nutrion by Alivion AG, the device provides an alternative to blood-prick tests, offering real-time insights for weight management, GLP-1 therapy tracking, and athletic training.
