Seems far-fetched to decipher that from breath, but a validation study from San Francisco State University found Lumen's nous comparable to in-lab respiratory exchange ratio (RER) tests.Ī morning level of one or two - indicating the body is burning fat - is ideal, while a four or five indicates you’re still processing food from the day before. The gadget's ‘sensor and flow’ meter measures the carbon dioxide concentration in your breath and, from that, determines if your body's primarily burning fat or carbohydrates. The Lumen is a small, vape-like device, into which you exhale a controlled amount of air - breathing guided by the accompanying app. 6 Signs Your Metabolism Is Out Of Whack.12 simple ways to rev up your metabolism.‘The more metabolically flexible someone is, the more effectively their body will process sugar, burning it - rather than storing it.’ Intriguing. ‘This refers to your body’s ability to react to different metabolic challenges,’ says Lumen coach Ryan Saraco on our intro call. According to a new gadget generating buzz - the metabolism ‘hacking’ device, Lumen - the key metric to look to for better health is something called metabolic flexibility. But after health habits went awry during the lockdown trilogy, I'm open to welcoming data to inform new ones. I'm not one of life’s natural trackers - years lost to obsessive calorie counting saw to that. Lumen full reviewĪ vape-like device designed by PHD-having, Ironman-doing twins purports to 'hack your metabolism' to help you make dietary choices more beneficial to your goals.

It may offer a practical solution to tracking dietary changes, particularly in relation to regular exercise, but users should be mindful of the complexity of metabolic adaptations and interpretation of data on a day-to-day basis'. It should be noted that our study only tracked for a short period, therefore longer-term studies are needed to assess whether the device can detect metabolic adaptations over time'.īut he remains positive about Lumen's possible efficacy, adding: 'However, the Lumen device could be a useful tool to support research and dietary interventions.

Roberts explains that 'the findings from our study demonstrate that a home-use portable device like Lumen could be a useful way of tracking weekly changes in dietary interventions when dietary carbohydrate is the main variable being changed. He added that 'when people leave the lab there are limited means to accurately assess metabolic changes at home, such as fuel use and whether the person is likely burning more fat or carbohydrates, either in response to a diet or exercise'.ĭr. What makes this technology interesting is that up to now, the only way to assess metabolic function has been under laboratory conditions using advanced and expensive respiratory analysers'. Lead author of the study, Dr Justin Roberts, Associate Professor in Nutritional Physiology for Health & Exercise at Anglia Ruskin University, said: 'Ours is the first study to investigate the practical use of this breath device.

Does Lumen work?Īccording to new research published in the Journal of the International Society of Sports Nutritionfollowing a study led by Anglia Ruskin University, it is possible to capture the impact of a meal on metabolism outside a lab environment. This is no quick fix, however, and it does take a few weeks to reap the benefits of this device. Once you have your score, Lumen will give you tips on how to improve your score and boost your metabolism over time. The world's first hand-held device that measures metabolism by measuring the CO2 levels in your breath to see if your body is using fat or carbs for fuel.īy understanding your main source of energy Lumen uses these measurements to give you a flex score, which is essentially how flexible your metabolism is.

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