Key Benefits

• 12-month subscription included & pre-loaded onto the device.

• Get unlimited metabolic measurements in real time.

• Optimise fat burning potential and boost energy levels.

• Fuel your day with a personalised nutrition plan.

• Discover your optimal fasting window and know exactly when to break your fast.

• Take your athletic performance to the next level.

Lumen is a handheld device that measures your metabolism in real time by analysing the CO₂ levels in your breath. Using advanced sensors, it detects whether your body is burning carbohydrates or fat for fuel, giving you instant metabolic feedback. This insight helps tailor your nutrition and lifestyle choices, optimising your energy levels, fat-burning potential, and overall metabolic health.

With a 12-month Lumen membership included & preloaded onto the device, you'll receive tailored nutrition plans updated daily, macro tracking and meal suggestions, insights and recommendations for smarter habit formation, metabolic coaching and support, and integrations with Apple Health, Google Fit, and Garmin. Plus, the new AI food logging feature allows you to log meals using photo and voice recognition.

_What’s in the box:

Lumen device
Travel case
Charging dock and USB-C cable
Quick start guide
Instruction manual

Specifications:
Dimensions: 4.02 x 1.63 x 1.31 inches.
Weight: 95 grams.
Materials: Stainless steel mouthpiece and cover.
Battery: Lithium Polymer battery with up to 10 days of charge (depending on daily usage)_

Lumen’s mission is to create a world where everyone has access to personalised nutrition and lifestyle guidance that supports metabolic health, empowering individuals to improve their health through cutting-edge technology. They offer a state-of-the-art metabolism tracker that provides real-time insights into metabolic health, helping users optimise their nutrition and wellness. With values of transparency, honesty, and integrity, Lumen is committed to providing science-backed solutions that prioritise long-term health. The brand also fosters a culture of teamwork and inclusivity, with a passionate, diverse team working towards better health for all.

With our Healf Curation Process, we do the work for you. Shop with confidence knowing that every item has been tried, tested, and curated for you.

Learn more about each step—Brand Discovery, Expert Validation, and Community Testing—here.

Lumen is for anyone looking to improve their metabolic health, manage their weight, boost their energy levels, support their workout routine, and live happier and longer lives.

The CO2 concentration is measured using a unique breath maneuver, which is performed by inhaling a fixed volume of air through the Lumen device (dynamic to each individual), holding it for 10 seconds, and exhaling fully.

The Services are designed to be used by healthy individuals who are over the age of 16. If you are under 16 years of age, pregnant, breastfeeding, or suffer from diabetes, severe asthma, or COPD, please consult a medical professional before using Lumen. Additionally, Lumen's nutritional recommendations may not be suited for people with kidney disease, cancer, or thyroid disorder. ‍For other medical conditions, please consult with your doctor first.