Breathe into better metabolic health

Lumen is the world’s first
handheld metabolic coach.

Lumen's research partners

65 million breaths and counting

Join the movement toward better metabolic health.

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Metabolism
is
life.

It's
your
body's
engine,
powering
every
process
from
your
heartbeat
to
the
steps
you
take.
Lumen
empowers
you
to
transform
your
metabolism
by
balancing
your
lifestyle,
so
you
can
reach
your
health
goals,
from
weight
management
to
athletic
performance
to
energy
and
longevity.

Join 300K+ Lumeners
changing their lives

12%

Up to 12% of body weight lost in just 6 months*

30%

Improvement in metabolic flexibility score*

3%

Body fat percentage lost on average in just 12 weeks**

Manage weight
"It's like night and day. It's amazing how this device has definitely helped with losing those extra pounds."
Shakis , 35
Increase muscle mass
"I lost 23 pounds, I'm leaner than ever,
I have more energy, and I eat healthier.
I love it."
Ryan , 40
Improve metabolic health
"Ever since I got the Lumen, I've been able to optimize my schedule to match my metabolic needs."
Tina , 33
Increase energy
"I'm no longer so fatigued in the afternoons after I have a heavy workout day."
Heather , 52

As seen on

How it works

Get tailored guidance to improve your nutrition, exercise, sleep, and stress levels for a healthier you.

Take a deep breath.
Breathe into your Lumen to get a real-time view of whether you're burning mostly fat or carbs, so you can understand the impact of your lifestyle on your metabolism.

Get the guidance that matters. 
Find your balance with data-backed, personalized lifestyle and nutrition support based on your unique metabolic profile.

Reach your health goals. Lumen is your personal metabolic compass, helping improve your metabolic flexibility at every stage of life.

Innovative research,

groundbreaking applications

Lumen collaborates with top institutions worldwide to conduct game-changing research about metabolism.

Metabolism shifts throughout the menstrual cycle
Lumen | Peer-reviewed study
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Metabolic flexibility improves carb usage post-meal
Lumen | Peer-reviewed study
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Lumen found to improve key health markers
Ichilov Tel Aviv Sourasky Medical Center | Pilot clinical trial
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Menopause impairs metabolic flexibility
Lumen | Peer-reviewed study
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Lumen is the top choice for doctors and clinics putting metabolic health first

Innovative, individualized, and data-driven solutions that empower both practitioners and patients to improve metabolic health.

Lumen Metabolism Data Enables Practitioners and Patients to Improve Metabolic Health.
FAQ

When your mitochondria use carbs as fuel, they release more CO₂ into your blood, and when they burn fat, they release less CO₂. Lumen analyzes the CO₂% in your breath and determines if you are using mostly fat or carbs for fuel based on the CO₂ concentration. 

* As reported in 2024 Lumen user data analysis 

** https://pubmed.ncbi.nlm.nih.gov/36195053/