Find your optimal
fasting window
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Cutting Edge Hardware meets Innovation
Personalize your intermittent fasting strategy
Find your optimal fasting window, build smarter habits, improve your metabolic flexibility, and track your progress toward well-being using your Lumen membership.
Real-time metabolic measurements. Measure your metabolism in context to understand what’s happening in your body.
Insights into your body’s energy source. Find out whether your mitochondria, your cells’ powerhouses, are burning fats or carbs for fuel.
Find your ideal intermittent fasting window.
It can be a powerful tool for sustainable weight loss and increased metabolic flexibility.
See how your lifestyle habits impact you today. You’ll receive tailored lifestyle recommendations based on your Lumen measurements.
Receive daily nutrition plans.
Lumen will also let you know when you’ve maximized fat burn, so you break your fasts on time and eat.
Learn more on your health journey.
Find science-backed coaching videos with actionable tips to help you understand more about intermittent fasting and metabolic health.
Reveal your metabolism's efficiency. Lumen will calculate your Flex Score over time as you continue to take your metabolic measurements.
Connect to your favorite health & workout apps Frictionless integrations with Apple Health, Google Fit, and Garmin.
Transforming lives, one breath at a time
“Lumen has been a huge help to me on my journey to metabolic flexibility. I use a continuous glucose monitor at times to keep my blood glucose levels in a healthy range, but at times I tend to rely too much on a very low carbohydrate diet to do so.
By using Lumen too, I can ensure that my low glucose levels won’t be at the expense of metabolic inflexibility. The staff at Lumen has been extraordinarily helpful — and always promptly — with any issues I had using the Lumen, from app issues to nutrition, to billing and membership.”
"I'm hitting my weight loss goals and enjoying food again thanks to Lumen. I was skeptical, but the information this device provides combined with the nutrition plan has yielded amazing lasting results:
Lower BMI, higher hemoglobin, lower blood pressure, lower resting heart rate, better body composition, and all the carbs I thought I couldn't enjoy!"
"I gained pandemic weight and then menopause came. I’ve always been slim but then I was gaining weight with difficulty losing it. Nothing was helping even a pretty good exercise regime. This device arrived one month ago and I’ve already lost 7lbs.
It’s kind of like a miracle. The real time carb/protein/fats tracker really helps me adjust during the day. Gone is the rollercoaster ride of energy and cravings! Amazing, amazing. Thank you!"
"I like how Lumen is helping me to learn my body’s signals. I also appreciate that the app tailors my macros throughout the day based on my activity.
I used to meal prep and eat the same thing for a week, but some days my activity and stress levels are different than others, so it makes perfect sense that my body may need fueled differently each day too."
"Before purchasing lumen, I did as much research as possible and looked at dozens of reviews. I was still surprised when I download the app and began using lumen, as to how much collateral there was.
Not only does Lumen track your metabolism, the tracks of sleep, exercise, and has a built-in food log with a very good barcode, reader and database of foods. It’s very clear that they have done the research on what people want! Worth every penny so I bought two for my wife and I!"
"I’ve been eating healthy, following my macros and working out regularly (weight training mostly) for a couple of years now. I even went to a nutritionist and went through some evaluations to see what I could do differently. I still felt like I was at a plateau and Lumen appears to be the missing link.
I have learned new foods to incorporate into my clean eating and have learned so much overall about my body and metabolism. I feel better than I already did, my sleep has improved and I’ve lost a few pounds in the first few weeks even though that wasn’t a goal of mine."
"My friend who is in her 60's has had great success in getting to a healthy weight. I was surprised to learn that she really wasn’t exercising because of a bad leg injury she had sustained, but more surprised to learn that Lumen was how she was managing to lose weight!
I was motivated by her results so I bought one. I’ve been using Lumen faithfully day, and night and have lost 6 lbs in 6 weeks thus far. It took some time to learn how to raise my Flex Score, but I’ve been managing to do it little by little. After all, it’s not a race! Slow and steady for me!"
״For me this has been a very enlightening experience. Going through all the weight loss and nutrition information that is available on the internet can be very daunting and confusing. But so many of the techniques I had read about before are integrated into the lumen experience.
But without lumen I never could have figured out how to use the techniques. I’m talking about intermittent fasting, carb cycling, tracking my macros, etc. I had done all of these things before with limited gains. But it’s hard to stay on track when you don’t have any feedback as to the changes that are taking place. With lumen you can see what impact your actions are having on your metabolism. This kind of biofeedback is immensely motivating and useful.״
Lumen Redefined Metabolic Tracking
Before Lumen, assessing your metabolic health required a lengthy procedure using a metabolic cart, costing hundreds of dollars
...for a single, detailed professional-grade metabolic measurement.
Lumen's handheld device meets the gold standard. Unlimited measurements can be taken anytime and anywhere.
...With each breath measurement, Lumen’s advanced algorithm builds a personalized diet plan and lifestyle recommendations based on your real-time results.
Before Lumen, understanding your metabolic health meant spending 40 minutes and paying hundreds of dollars for a single detailed, professional-grade metabolic measurement.
Lumen's handheld device meets the gold standard. Unlimited measurements can be taken anytime and anywhere.
With each breath measurement, Lumen’s advanced algorithm builds a personalized diet plan and lifestyle recommendations based on your real-time results.
Lumen in the press
I lost 4lb the first week and 2lb the second...but more importantly, I was no longer sleeping badly or tempted to have a nap at 4pm.
You could hire an expensive coach or you could hack your health with Lumen.
Breathe into it and the Lumen will tell you how well you're burning fat, and how to eat healthier.
This Smart Gadget Helps You Hack Your Metabolism And Lose Weight.
What once took over an hour to measure, and a team of nutritionists and scientists to analyze, can now be done in less than three minutes.
I lost 50lbs in seven months by changing one thing about my routine - Lumen
As a nurse and a woman who has struggled with weight loss…trying Lumen was eye-opening and validating.
To get a metabolic reading in the past, you had to go to a lab. Now you can keep it in your purse or gym bag.
Cleverly, all you have to do is breathe into the handheld device (which is small enough to fit in even the smallest handbags).