Background image

The Science of Lumen

Backed by science
Trusted by researchers

Research with Lumen
Featured study

Prediabetes Improvement

In a pilot clinical study of participants with prediabetes, Lumen usage significantly improved multiple metabolic parameters, including body weight, % body fat, waist circumference, HbA1c, and triglycerides.
Graph
Read article

Peer-reviewed papers and research

Explore the cutting-edge research and peer-reviewed studies that support Lumen and its impact on metabolism and wellness.

Peer Reviewed Clinical Study
October 04, 2022
The effects of Lumen usage on metabolic control in adults with prediabetes: pilot clinical trial
Research Topic:
Examine the effects of Lumen’s personalized, measurement-guided lifestyle program on anthropometric and metabolic variables in adults with prediabetes.
Conclusions:
Lumen usage significantly improved multiple metabolic parameters, demonstrating its potential to deliver better clinical outcomes for patients metabolic diseases
Read More
October 04, 2022
Test-retest reliability of Lumen and response to carbohydrate ingestion
Research Topic:
Measure, evaluate and quantify the test-retest variability (repeatability) and the metabolic response after Oral Glucose Ingestion of the Lumen metabolic measurement in a standardized manner.
Conclusions:

The %CO2 measurements using the Lumen device are highly repeatable, exhibiting a good to excellent ICC reliability value. Therefore, this supports the formerly established validity of the Lumen device.

Read More
January 03, 2023
Body weight reduction with active Lumen usage
Research Topic:
Determine if Lumen users who chose the “healthy weight loss” track reported weight loss and if their reports were consistent with the data.
Conclusions:
Higher levels of engagement with Lumen produced greater weight loss. Engaged users lost over 5% of their body weight.
Read More
Peer Reviewed
March 02, 2023
The efficacy of a home-use metabolic device (Lumen) in response to a short-term low or high-carb diet
Research Topic:
Examining the efficacy of a home-use metabolic device (Lumen) in response to a short-term low or high carbohydrate diet.
Conclusions:

Findings demonstrated the Lumen device detected significantly increased CO2 expiration in response to a high-carbohydrate meal, and may be useful in tracking mean weekly acute dietary carb changes.

Read More
Peer Reviewed
May 17, 2021
Measure fuel utilization in healthy young adults with the Lumen device
Research Topic:
Evaluating the validity of a Lumen device for measuring metabolic fuel utilization in healthy young adults.
Conclusions:
The Lumen device is able to detect changes in metabolism due to dietary intake providing real-time metabolic information for users under any circumstances, in agreement with the gold standard for RER measurement.
Read More
Peer Reviewed Clinical Study
October 04, 2022
The effects of Lumen usage on metabolic control in adults with prediabetes: pilot clinical trial
Research Topic:
Examine the effects of Lumen’s personalized, measurement-guided lifestyle program on anthropometric and metabolic variables in adults with prediabetes.
Conclusions:
Lumen usage significantly improved multiple metabolic parameters, demonstrating its potential to deliver better clinical outcomes for patients metabolic diseases
Read More
October 04, 2022
Test-retest reliability of Lumen and response to carbohydrate ingestion
Research Topic:
Measure, evaluate and quantify the test-retest variability (repeatability) and the metabolic response after Oral Glucose Ingestion of the Lumen metabolic measurement in a standardized manner.
Conclusions:

The %CO2 measurements using the Lumen device are highly repeatable, exhibiting a good to excellent ICC reliability value. Therefore, this supports the formerly established validity of the Lumen device.

Read More
January 03, 2023
Body weight reduction with active Lumen usage
Research Topic:
Determine if Lumen users who chose the “healthy weight loss” track reported weight loss and if their reports were consistent with the data.
Conclusions:
Higher levels of engagement with Lumen produced greater weight loss. Engaged users lost over 5% of their body weight.
Read More
Peer Reviewed
March 02, 2023
The efficacy of a home-use metabolic device (Lumen) in response to a short-term low or high-carb diet
Research Topic:
Examining the efficacy of a home-use metabolic device (Lumen) in response to a short-term low or high carbohydrate diet.
Conclusions:

Findings demonstrated the Lumen device detected significantly increased CO2 expiration in response to a high-carbohydrate meal, and may be useful in tracking mean weekly acute dietary carb changes.

Read More
Peer Reviewed
May 17, 2021
Measure fuel utilization in healthy young adults with the Lumen device
Research Topic:
Evaluating the validity of a Lumen device for measuring metabolic fuel utilization in healthy young adults.
Conclusions:
The Lumen device is able to detect changes in metabolism due to dietary intake providing real-time metabolic information for users under any circumstances, in agreement with the gold standard for RER measurement.
Read More
Peer Reviewed Clinical Study
October 04, 2022
The effects of Lumen usage on metabolic control in adults with prediabetes: pilot clinical trial
Research Topic:
Examine the effects of Lumen’s personalized, measurement-guided lifestyle program on anthropometric and metabolic variables in adults with prediabetes.
Conclusions:
Lumen usage significantly improved multiple metabolic parameters, demonstrating its potential to deliver better clinical outcomes for patients metabolic diseases
Read More

Scientific collaboration

Research partnerships with leading institutions in the scientific community to advance the understanding of metabolism and drive innovation in wellness.

Example
Measuring the gastric effect of slow vs rapid digestion carbs
Research Topic:
Prof. Bruce Hamaker and colleagues at Purdue University's Whistler Center for Carbohydrate Research are using Lumen to study the metabolic effects of slow versus rapidly-digested carbohydrates.
Example
Influence of menstrual cycle phase on postprandial substrate oxidation
Research Topic:
Prof. Jenna Gillen and her team are using Lumen at the University of Toronto's Faculty of Kinesiology and Physical Education to study the differences in fat oxidation across the menstrual cycle of women.
Example
Time-restricted Feeding to Mitigate Metabolic Impairments during Circadian Misalignment
Research Topic:
Josiane Broussard, Assistant Prof. and director of the Sleep and Metabolism Laboratory in the Department of Health and Science, is investigating how avoiding food consumption during the biological night can reduce the impact of circadian misalignment on metabolic homeostasis in adults.
Example
Logo
Effect of morning bodyweight interval exercise
Research Topic:
Prof. Jenna Gillen and her team are using Lumen at the University of Toronto's Faculty of Kinesiology and Physical Education to study the effects of pre and post breakfast HIIT on postprandial glycemic control, post-exercise fat oxidation and appetite perception in women.
Example
Measuring the gastric effect of slow vs rapid digestion carbs
Research Topic:
Prof. Bruce Hamaker and colleagues at Purdue University's Whistler Center for Carbohydrate Research are using Lumen to study the metabolic effects of slow versus rapidly-digested carbohydrates.
Example
Influence of menstrual cycle phase on postprandial substrate oxidation
Research Topic:
Prof. Jenna Gillen and her team are using Lumen at the University of Toronto's Faculty of Kinesiology and Physical Education to study the differences in fat oxidation across the menstrual cycle of women.
Example
Time-restricted Feeding to Mitigate Metabolic Impairments during Circadian Misalignment
Research Topic:
Josiane Broussard, Assistant Prof. and director of the Sleep and Metabolism Laboratory in the Department of Health and Science, is investigating how avoiding food consumption during the biological night can reduce the impact of circadian misalignment on metabolic homeostasis in adults.
Example
Logo
Effect of morning bodyweight interval exercise
Research Topic:
Prof. Jenna Gillen and her team are using Lumen at the University of Toronto's Faculty of Kinesiology and Physical Education to study the effects of pre and post breakfast HIIT on postprandial glycemic control, post-exercise fat oxidation and appetite perception in women.
Example
Measuring the gastric effect of slow vs rapid digestion carbs
Research Topic:
Prof. Bruce Hamaker and colleagues at Purdue University's Whistler Center for Carbohydrate Research are using Lumen to study the metabolic effects of slow versus rapidly-digested carbohydrates.
Example
Influence of menstrual cycle phase on postprandial substrate oxidation
Research Topic:
Prof. Jenna Gillen and her team are using Lumen at the University of Toronto's Faculty of Kinesiology and Physical Education to study the differences in fat oxidation across the menstrual cycle of women.
Research with Lumen

How Lumen works

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.

By measuring the CO2 level with the exhale flow rate, Lumen identifies the source of energy the body is using, carbs or fats.

The science is the same, but with cutting-edge technology

Lumen has been validated in peer-reviewed research to match the gold standard of measuring RER.

image - before Lumen
Before Lumen
The only way to measure your metabolism was in a hospital or clinic with a costly and time-consuming test known as Respiratory Exchange Rate (RER).
image - after Lumen
With Lumen

Developed by researchers, Lumen uses RER as the core data point to bring the same measurement to a home environment by measuring the CO2 in your breath through the sensor and flow meter

Read article

How researchers use Lumen

Unlike metabolic carts, Lumen measures breath CO2 in under 30 seconds, providing real time data.

Measurements can be taken in a lab or remotely, and results are delivered in real time through a simplified research-friendly version of the Lumen app. Data is also stored for later reference.

Lumen does not measure oxygen levels or consumption.

Research collaborations with the scientific community

icon
icon
icon
icon
icon
icon
icon
icon
icon
icon
icon
icon
icon
icon
icon
Research with Lumen
Background image
Woman breathing into a Lumen device

Research with Lumen

Use the Lumen device in your research, or do a joint research project with us