Burn Fat, Lose Weight, and Boost Energy Naturally with Lumen

by Deborah Maragopoulos FNP | May 29, 2023 | Weight Management | 0 comments

Are you having trouble losing weight? If you’ve been supporting your hypothalamus with Genesis Gold® but you’re still having trouble sticking with a diet that enables you to burn fat, I’d like to recommend Lumen.

Lumen is a hand held device that measures how much carbon dioxide you’re breathing out. The more CO2 you breathe out, the more likely you’re burning carbohydrates for energy rather than fat. In order to lose excess weight, your body needs to be able to utilize body fat for energy.

After a few weeks of using Lumen, it will calculate your metabolic flexibility score meaning how easily your body burns fat. You can see your progress overtime and more importantly, learn what you’re doing – activity wise, sleep wise, diet wise – that may be affecting your ability to burn fat.

Lumen Review

I was asked a couple months ago to review Lumen. It comes with an interactive app that interprets the metabolic data and develops a nutritional plan for the day to encourage your body to burn fat. The app has a wide range of food choices with macros measured. So you can easily record your food intake to determine if you’re meeting your nutritional goals. You can also record your activity, sleep, and other lifestyle goals on the app.

If you are having trouble counting your macros and not sure if you’re in the process of burning fat, Lumen is a great tool for you.

As a postmenopausal woman, I told the app that I would like to work on my fitness. The app asks for your height, weight, age and for women – menstrual status. Without extra measurements like waist and hips, the app can only use BMI. This is not an accurate measurement of body composition.

As a healthcare practitioner who knows nutrition intimately and can eyeball a plate and count the macros and estimate the micros, I have a few recommendations for the Lumen app…

In my professional opinion, the macros are a bit high for a postmenopausal woman expressing the need to lose weight.

The amount of fat that was recommended on my low carb days was higher than I could have possibly consumed. Even if I had eaten a stick of butter every day! Eating that much fat may increase the risk of gallbladder issues for menopausal women.

It’s interesting to note that on the days where I could tell that my body was burning fat (I know because I crave carbs), the next morning I would measure in the fat burning zone.

On the occasional night that I didn’t sleep well and felt a bit amped up (most likely from cortisol surging to get glucose to my brain), the next morning I would register high CO2. This means I was burning carbs, not fat.

Below is a week of my measurements:

Lose Weight with Lumen

Lumen rates your CO2 measurements on a scale of 1 – 5 (1 means you’re burning fat, 5 means you’re burning carbs). The 4 is the morning after missing sleep taking care of my three year old granddaughter who had nightmares all night.

As an asthmatic, it took me a couple of weeks to get the breathing down to be able to register on Lumen. I had a little trouble with the prolonged exhalation. I found that I needed a longer inhalation in order to adequately exhale long enough to record my carbon dioxide.

A definite plus for Lumen is its accuracy in measuring CO2. The device was pitted against standard CO2 metabolic measuring devices in a National Institute of Health study and found to be accurate.

After your morning CO2 measurement, the app explains your results. It then recommends grams of carbohydrates, protein and fat for the day. It also has meal suggestions to help you stick to your macro goals.

Lumen is an excellent accountability tool to help keep you committed to your fitness or weight loss goals.

You record your meals and the app is well versed in foodstuffs so that it will automatically record your macros.

Record your daily activity, your sleep, log any goals you have, and Lumen will remind you of your goals and the activities that you’ve planned for the day.

Pros:

  • Sleek design
  • Comprehensive compatible app
  • Explanatory videos
  • Great customer support
  • Encourages accountability

Cons: 

  • Doesn’t base macro recommendations on actual body composition
  • Macro recommendations do not take into account health conditions

If you need help losing weight, Lumen is an excellent tool to measure whether or not you’re burning fat or carbohydrates. So you can stick with your fitness and weight loss goals.

Just use this link to get started. 

How can I reverse my insulin resistance?

To go from insulin resistant to sensitive to insulin allowing it to lock into your cell receptor sites and export glucose into your cells, you need to do four things:

  1. Supporting your Hypothalamus is crucial to reversing insulin resistance. My patients have been successful taking Genesis Gold® every day
  2. Exercise is critical to reversing insulin resistance 
  3. Following an insulin resistant diet will help sensitize your insulin receptors
  4. Getting adequate sleep in the dark helps reverse insulin resistance. 

You can read more about how to reverse insulin resistance here.

If you want to learn more about weight loss, please join our free Hormone Reboot Training.

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Frequently Asked Questions:

Can your hypothalamus cause weight gain?

Yes. The hypothalamus is the master regulator of metabolism, controlling how your body stores and burns energy through its signaling to the thyroid, adrenals, and pancreas. When the hypothalamus becomes dysregulated by chronic stress, poor sleep, inflammation, or blood sugar instability, it defends a higher weight "set point" — causing the body to hold onto fat regardless of diet or exercise. This makes hypothalamic dysfunction an upstream root cause of stubborn weight gain.


What is a weight set point and why won't mine move?

A weight set point is the body weight your hypothalamus works to defend, calibrated over time by stress, sleep, hormones, and inflammation. When you diet, the hypothalamus perceives scarcity and responds by slowing metabolism, increasing hunger hormones, and suppressing satiety signals to return you to that set point. This is why most people regain lost weight within two to five years of conventional dieting — the set point itself was never recalibrated, only temporarily overridden.


Why do I gain weight under stress even when I'm not eating more?

Chronic stress raises cortisol, which disrupts blood sugar regulation, promotes abdominal fat storage, and signals the hypothalamus that the body is under threat. In survival mode, the hypothalamus defends fat stores and slows metabolism — so weight can increase even without any change in calorie intake. The stress chemistry, not the food, is driving the weight gain, which is why stress reduction is essential to any lasting metabolic reset.


Why do I regain weight after stopping GLP-1 medications?

GLP-1 medications work peripherally on appetite and gastric signaling, but they do not address the underlying hypothalamic dysregulation that sets your defended weight. Because the hypothalamic set point is never recalibrated, the body resumes defending its original weight once the medication stops — leading to significant regain. Long-term success requires restoring hypothalamic regulation so the set point itself lowers, rather than relying on appetite suppression alone.


How long does it take to reset your metabolism?

Genuine metabolic recalibration takes a minimum of 90 days, because the hypothalamus needs consistent signals of safety and sufficiency before it will lower its defended set point. This differs from a diet, which produces temporary suppression the body quickly corrects. A 90-day reset typically moves through three phases: stabilizing stress chemistry (days 1–30), rebuilding metabolic efficiency (days 31–60), and lowering the weight set point (days 61–90).


Why does my thyroid feel slow even though my labs are "normal"?

Under chronic stress, the body converts thyroid hormone into reverse T3, which blocks active thyroid receptors and slows metabolism at the cellular level — even when standard lab values appear normal. This means you can experience genuine symptoms of slow metabolism, such as fatigue, cold intolerance, and brain fog, while your thyroid panel looks unremarkable. Addressing the upstream hypothalamic and stress signaling often improves thyroid conversion and symptoms.


Is stubborn weight gain a willpower problem?

No. Stubborn weight gain is a signaling problem, not a willpower problem. The hypothalamus governs weight through survival mechanisms that operate below conscious control — defending its set point by slowing metabolism and increasing hunger when it perceives threat. No amount of discipline can override this system; lasting change comes from restoring hypothalamic regulation through reduced stress, balanced blood sugar, restorative sleep, and targeted nutritional support.

About the Author - Deborah Maragopoulos FNP

Known as the Hormone Queen®️, I’ve made it my mission to help everyone - no matter their age - balance their hormones, and live the energy and joy their DNA and true destiny desires. See more about me my story here...

     

Last Updated: April 8, 2026

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