Device measures changes in breath acetone concentrations as fat is burned during weight loss

Fitness fanatics may soon be able to gauge if their hard work is paying off without the need for weighing scales thanks to a new device that can instantly tell if your body is burning fat. The portable, pocket-sized sensor, produced by a group of researchers in Japan, works by measuring increased levels of acetone on the breath - a good indicator of when the body has begun to break down fat. The device has been presented in IOP Publishing's Journal of Breath Research...

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