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Everything you need to optimize your health in the palm of your hand

Everything you need to optimize your health

Lumen metabolism tracker

The Lumen Device

Metabolic tracking in the palm of your hands

  • Sleek & compact design
  • iOS and Android app
  • High-precision CO2 sensor
  • Travel Case
Lumen device and cell phone

Real-time tracking

Track whether you’re in fat burn or carb burn through your breath

  • Unlimited measurements
  • Activity & sleep tracking
  • Metabolic health indicator
  • Workout optimization insights

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Cell phone

Nutrition coaching

Know what to eat and when

  • Daily personalized nutrition plan
  • Meal suggestions and recipes
  • Intermittent fasting insights
  • Metabolic food log
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Choose your track

Lumen device included, with warranty for the duration of your track
3 Month Track
Save $90
6 Month Track
Save $150
12 Month Track
To ensure you never miss a breath, tracks renew automatically and you can cancel anytime
  • The Lumen Me official Twitter account Lumen community access
  • The Lumen Me official Twitter account Free metabolic expert support
  • The Lumen Me official Twitter account Cancel anytime
Money back 30 day guarantee

Try Lumen risk free for 30 days

We know you will love your Lumen experience but If for any reason you are not 100% satisfied, return your Lumen for a full refund no questions asked.
Drs. Michal & Merav Mor
Drs. Michal & Merav Mor

We started Lumen because we believe everyone should have access to the insights they need to understand their body and optimize their health.

It’s our life’s work – and we love every minute of it.

Jenna Leveille

In my second month of trying Lumen, I lost 12 lbs. I love using my Lumen first thing in the morning before any meals. The app is easy to use, and the education on the app is very impressive.

Jenna Leveille lost 140 lbs and inspires others through her accountability community Getting Closer Everyday

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A women with lumen device

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Lumen trains your metabolism to use the food you eat more efficiently

When your metabolism is more flexible, you are better able to burn fat instead of carbs, leading to weight loss. By focusing on metabolism instead of restrictive or unsustainable diets, Lumen helps you lose weight and keep it off for good with daily feedback.

Benefits of enhancing your metabolism

Your metabolism can be improved, just like your body gets stronger and more fit from working out. Improving your metabolism's efficiency leads to:


Natural Weight Loss

Lumen helps improve your metabolic flexibility which allows you to lose weight in a sustainable way.


Less Snacking

Lumen helps you improve your body’s ability to burn fat which decreases your hunger levels and makes your body less dependent on snacking.


Boosted Energy Mood

Increase your energy levels by developing a high functioning metabolism.


Improved Overall Health

Lumen helps you improve your metabolic flexibility, your body's efficiency in shifting between using fats and carbs


Enhanced Weight Maintenance

Developing a flexible metabolism allows your body to maintain a healthy weight by optimizing the body’s ability to burn fat.


Your metabolism powers everything that happens in your body. By training it to be more flexible, and switch more easily between burning carbs and fat, you can improve many aspects of your well being. From work-outs and weight loss to sleep and longevity.

Lumen measures the CO2 concentration in a single breath. The CO2 you exhale is produced when your metabolism turns fuel into energy. Through a patented algorithm Lumen can use the measurement to accurately tell you, at a level comparable to that of gold standard RER measurement equipment, what fuel your body is currently using for energy - fats, carbs, or both.

A more flexible metabolism makes it easier to lose weight, with Lumen you'll train your body to switch more easily from burning carbs to fat. Many users find this helps them with weight loss. Additionally if you select a weight loss track in the Lumen app, Lumen designs your nutrition plan in a way that supports healthy and sustainable weight loss.

In the past, the only way to get a single "gold standard" measurement was to spend 45 minutes lying very still in a specialist lab, connected to equipment, these tests cost up to $350+ per a single measurement. With Lumen you have the same tech at your fingertips and can measure your metabolism from the comfort of home, in minutes not hours and for the first time with a personalized daily plan to not only measure but also reach your health and wellness goals.

Reaching a state of ketosis usually requires extended deprivation from consuming carbohydrates. Lumens methodology isn't about cutting out carbs but rather incorporating healthy carb rich foods into your diet, while training your body to shift more efficiently between using carbs and fats as a fuel source and maintaining a healthy state of fat burn.

For more info read this article on the subject.

Yes. Lumen has been validated in multiple studies as well as peer-reviewed and scientifically proven to be as accurate as the gold standard for measuring Respiratory Exchange Rate (RER) . Read the peer-reviewed paper.

No. Lumen is a wellness product that helps you measure and track your metabolism.It does not diagnose, treat, cure or prevent disease, and its recommendations are not medical advice. Always speak to your doctor if you have any concerns about your health.

We want you to be completely satisfied with your Lumen. So please reach out to Customer Support if you're having problems. But if you decide Lumen is not for you, just return it within 30 days of receiving it for a full refund. Read our full refund policy.

Lumen is under warranty throughout your membership term . So if your device or charging dock develop a fault caused by manufacturing defects and you have an active membership, we'll fix or replace them free of charge. Accidental damage is not covered. Read our full warranty policy.

We created Lumen to help people above the age of 16, improve their metabolic flexibility so they can enjoy better work-outs, 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 recommended Lumen for people with the following:

‍Who should not use Lumen? ‍Conditions affecting the measurements:

  • Diabetes
  • Severe asthma
  • COPD
  • Pregnancy

‍Additionally Lumens nutritional recommendations may not be suited for people with:

  • Kidney disease
  • Cancer
  • Thyroid disorder

‍For other medical problems, please check with your doctor first.