Your metabolic health,
in your hands
1-Year
Warranty
Metabolic
Expert Support
Your metabolic health,
in your hands
Members get daily personalized guidance and insights for reaching their health goals
Real-time insights into your body’s energy source. Know if your body is burning fats or carbs and get daily guidance on how to reach your health goals.
See how your lifestyle habits impact you today. Learn what works for your body with nutrition, exercise, sleep and stress and make better choices.
Know what to eat and when.
Lumen learns your body and gives you a daily personalized plan to know what to eat.
Make on-the-spot decisions.
Measure before your workouts to see whether you have enough fuel and after to see the impact.
Learn more on your journey.
Find science-backed coaching videos with actionable tips to help you understand more about metabolic health.
Reveal your metabolism's efficiency. Lumen measures your metabolic health and provides you with a score to reflect it.
Connect to your favorite health & workout apps. Frictionless integrations with Apple Health, Google Fit, and Garmin.
Sync your nutrition to your monthly cycle. Find personalized recommendations for each day of your phase suited for your physiology.
“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.״
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.
Device with lifetime measurements + 12 months of premium membership
One device with lifetime measurements + 12 months of premium duo membership
Device with lifetime measurements + 3 months of premium membership
Returned device in unopened box, verified to be unused and in as-new condition. One month of premium membership included. * Additional discounts do not apply to this item
We just made Lumen even more accessible
Our pricing is now simpler and more affordable — the device and membership come bundled together — no surprises at checkout.
Each bundle includes one Lumen device and a membership plan – no extra steps, no surprises.
Get started with up to 50% off.
Accessories. Stay on track, anywhere
Includes an extra charger, case, and cap to keep you on track, no matter where the day takes you.
Includes an extra charger, case, and cap to keep you on track, no matter where the day takes you.
Keep an extra charger at work for easy measurements on the go.
Keep an extra charger at work for easy measurements on the go.
Keep your Lumen safe while on the go.
Keep your Lumen safe while on the go.
Protect your device with a magnetic cap.
Protect your device with a magnetic cap.
Add-ons. Make your journey a meaningful one
Access expertise, motivation, and personalized guidance, right when you need it. Get instant access to specialist nutrition support, daily macro adjustments tailored to your lifestyle, and holistic coaching that keeps you informed, accountable, and empowered every step of the way.
Lumen’s unique technology has been validated to match the gold standard for metabolic measurement, giving you access to lab-level insights from your home.
The advanced lithium-ion polymer battery provides rapid charging, and lasts for ~10 days of use.
Compact, but powerful. Lumen fits in your hand, pocket, or handbag - ensuring effortless measurements anytime, anywhere.
Form meets function with Lumen’s minimalist aesthetic and ergonomic design, made with high-quality materials to a top-tier standard.
Know if your body is burning fats or carbs and get daily guidance on how to reach your health goals.
Receive a personalized nutrition plan each morning based on your unique metabolic data. Your macros and meal suggestions adapt daily depending on whether you're burning fat or carbs
Get AI-powered meal suggestions that align with your daily macros. Easily log meals via photo or voice for real-time feedback and accountability.
Understand how your food, sleep, workouts, and stress impact your metabolism. Get lifestyle tips and insights that help you make smarter daily decisions.
Access expert guidance and community support to reach your goals. Lumen provides science-backed coaching and educational tools to help you stay on track.
* certain app features require an active membership
The Lumen device uses a CO2 sensor and flow meter to determine the carbon dioxide concentration in your breath, which indicates whether your body is burning fat or carbs. This measurement builds a daily nutritional plan.
4.02in X 1.63in X 1.31in
0.21 pounds / 95g / 3.35 oz
The advanced Poly Ion battery provides rapid charging and assures ongoing usage, even in long business or fun trips, without the need to charge the device more than once every 2 weeks.
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).
Yes, the Lumen device is the only way to measure your metabolism in real-time to receive personalized insights and guidance in the Lumen app.
Yes, you can cancel your membership at any time you wish.
The membership cancellation will come into effect on the next billing cycle.
Your membership will start when you activate your account after receiving your Lumen device, or 10 days after your purchase, whichever is earlier.
Yes, for Lumen devices purchased starting July 30th, 2023, after the cancellation comes into effect you’ll still be able to take unlimited metabolic measurements. However, you won’t have access to the Lumen membership experience, including personalized insights and guidance.
We created Lumen to help people above the age of 16, improve their metabolic flexibility so they can enjoy better workouts, improved sleep, easier weight loss, and happier, longer lives. However, there are certain conditions and diseases which can impact the Lumen results and therefore we do not recommend Lumen for people with the following:
Additionally, Lumen's nutritional recommendations may not be suited for people with:
For other medical problems, please check with your doctor first.
Lumen is under warranty for one year from the date the device is delivered to you. If your device or charging dock develop a fault caused by manufacturing defects during that period, we'll fix or replace them free of charge. Accidental damage is not covered. Read our full warranty policy.
Your Lumen can be returned for a full refund within 30 days of receiving it, if it is unopened. We want you to be completely satisfied with your Lumen. So please reach out to Customer Support if you’re having problems. Read our full refund policy.