This device claims to 'hack' your metabolism. I tried it for two weeks to find out.

It’s 9 a.m. and a small breathalyzer-like device called a Lumen — which looks sort of like a bulbous silicone vape — is about to tell me what I already know. I sleepily inhale through it, hold my breath for 10 seconds, then exhale back through the device and wait for the results to come in on the Lumen app. Yes, it's confirmed: I overdid it on the tacos and wings last night.

Lumen is a new health product that officially launches Tuesday. Through the device and app, Lumen aims to give people more information about how they process food in order to achieve fitness and weight loss goals by "hacking" their metabolism. Each time you breathe into it, the device analyzes your breath, giving you a score on a scale of 1 to 5 to tell you whether your body is running on energy from your fat stores (the ideal "fat burning" 1 or 2 state), the carbohydrates you’ve consumed (a 4 or 5), or a combination of both (a 3). It follows with a recommended meal plan of approximately how many carb, fat, and protein servings you should be eating, with the ultimate goal of making your metabolism more efficient. Read more...

More about Diet, Devices, Wellness Apps, Tech, and Health