Trusted by 300,000+ users
Use Lumen to keep the weight off for good without forever GLP-1s

Measure your breath in 20 seconds to see if you’re burning carbs or fats for energy. Instantly get a personalized plan based on your results to supercharge your metabolism, fat burning, weight loss, and muscles while on GLP-1s and beyond.

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How Lumen works

1

Take a breath

In 20 seconds, Lumen reveals what your 
body is burning for energy: carbs or fats.
2

Get your personalized plan.

Based on your real-time results, the app provides a tailored meal plan, carb recommendations, and daily macros.
3

Track your meals with
AI-powered food logging.

Log your meals in a snap using Lumen's
AI-powered food tracker to stay on top
of your macros and carb recommendations.
4

Lose weight and keep it off

The more you use the app, the more insights
and strategies you’ll unlock to supercharge
your metabolic health and weight loss.

How your metabolism works

Your daily lifestyle choices impact your metabolic health, 
and you can see it all in your breath. 

Digestion
When you consume food, it first enters the stomach, where digestive enzymes begin to break it down. The partially digested food then moves into the intestine, where it’s further broken down into nutrients, including glucose and fatty acids.
Metabolism
Mitochondria, the powerhouses of your cells, burn glucose and fat from the food you eat, or your body’s carb and fat stores, into energy you use daily. When your mitochondria and your metabolism are healthy, your body can make energy efficiently.
Breath
By measuring your breath, you can determine whether your mitochondria are burning glucose or fat for energy. This helps you understand your metabolism and the impact of your lifestyle choices on your fat burning and weight loss.
How Lumen measures your metabolism
The most advanced technology and sensors
Lumen uses ​​CO2 sensors, flow meters, barometric pressure, and temperature sensing technology to determine whether you’re burning carbs or fats for energy and sends this data to the app.
The Lumen app
The app then reveals what your body is burning for energy, and provides insights and strategies to help you reach your longevity goals.
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40+ integrations
Sync Lumen with your favorite health apps and wearables for a seamless, data-driven experience.

Benefits of using Lumen while
on your GLP-1 journey

Boost your metabolic flexibility
to lose weight and keep it off
Get precise macro
and carb timing recommendation
Know how to fuel before
workouts to avoid muscle loss
Build and maintain your muscle,
even while on GLP-1s
Use carbs for energy
instead of storing them as fat
Build lasting habits for long-term
health and weight loss
Finally achieve lasting weight loss.
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10+ years of experience
and research studies

Lumen’s accuracy is clinically validated, giving you the confidence to maintain long-term sustainable weight loss.

FAQ

Yes. Lumen can be combined with GLP-1 treatment to support weight management efforts and maintain muscle mass alongside a healthy lifestyle and diet.

When you measure your breath, Lumen creates a personalized nutrition plan for you with customized macros based on your results.

Yes. Take a Lumen pre-workout breath measurement to determine if you should fuel up before your high-intensity workout. If you’re burning fat, that’s a sign your glycogen stores are low, and you should eat a fast-digesting carb to avoid muscle breakdown.

Yes. Take a Lumen pre-workout breath measurement to determine if you should fuel up before your high-intensity workout. If you’re burning fat, that’s a sign your glycogen stores are low, and you should eat a fast-digesting carb to avoid muscle breakdown.

Yes. Lumen provides numerous lifestyle strategies to help manage your carb intake. This includes which carbs to eat, how many, and when. .

If you sometimes wake up in carb burn, it might indicate some areas of your lifestyle are out of balance. This includes having a late meal close to bedtime, eating too many carbs, poor sleep quality, or stress. If this happens, Lumen provides strategies to help you wake up in fat burn more often.

Yes. When you measure your metabolism before a high-intensity workout, Lumen lets you know if you need to fuel up with fast-digesting carbs. It also adjusts your carb intake for the day to account for your training and adequate recovery.

Yes. Lumen helps you improve your metabolic flexibility while using GLP-1s through lifestyle strategies tailored to your body. This means your body will be primed to efficiently switch between burning carbs and fats even after GLP-1 treatment. This has many benefits, including weight management, improved fat loss, balanced energy levels, and better fitness performance..

Lumen is not recommended for people with type 2 diabetes.