The Truth About Red Light Therapy and Using Light as Medicine

20 Oct 2025 · 24 min

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Podcast Episode Notes: The Truth About Red Light Therapy and Using Light as Medicine

Podcast Overview Podcast Title: The Model Health Show Host: Shawn Stevenson Description: A fun, entertaining, and enlightening exploration of health and fitness topics, breaking down complex health issues for better understanding and action.

Episode Details Episode Title: The Truth About Red Light Therapy and Using Light as Medicine Episode Description: Explores the growing popularity of red light therapy in recovery and beauty treatments, delving into its science-backed benefits, mechanisms, and practical applications.

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Key Takeaways

Introduction to Light Therapy

  • Red Light Therapy (RLT) is gaining popularity for its potential health benefits, including:
  • Reducing pain
  • Enhancing skin quality
  • Supporting muscle growth
  • Potential benefits for various disorders

Mechanisms of Light Therapy

  1. Human Sensitivity to Light:
  2. Photoreceptors exist not only in the eyes but throughout the body, influencing cellular processes and circadian rhythms.
  3. Circadian clocks play a crucial role in regulating gene expression and bodily functions.
  1. Role of Mitochondria:
  2. Mitochondria are vital for energy production and cellular health.
  3. RLT affects mitochondrial function by stimulating the enzyme cytochrome C oxidase, enhancing ATP production and cellular repair.
  1. Quantum Influence:
  2. Light impacts human biology in ways that intersect with quantum mechanics, affecting health at a fundamental level.

Benefits of Red Light Therapy

  • Pain Reduction:
  • Meta-analysis showed significant reduction of knee pain in osteoarthritis patients, lasting up to 3 months post-treatment.
  • Skin Health:
  • Clinical trial found a 36% reduction in wrinkles and a 20% increase in elasticity after four weeks of RLT.
  • Pathogen Reduction:
  • Far UV light was effective in killing staph bacteria, suggesting potential applications for infection control.
  • Muscle Strength:
  • Study demonstrated a 55% increase in strength over a control group when RLT was combined with strength training.

Broader Applications of Light Therapy

  • Hypothyroidism:
  • Research indicated RLT could significantly reduce the need for thyroid medication in patients with autoimmune conditions.
  • Body Fat Reduction:
  • A study on red light therapy for body contouring led to significant waist girth loss without changes in diet or exercise.
  • Mental Health:
  • Light therapy has been shown to improve symptoms of depression and enhance mental alertness.
  • Other Types of Light Therapy:
  • Green Light Therapy: Proven effective in reducing migraine frequency and intensity.

Practical Advice

  • Sunlight Exposure:
  • Advocated as the ultimate source of light therapy; emphasizes the importance of sun exposure for overall health.
  • Managing Light Exposure:
  • Importance of minimizing blue light exposure, particularly in the evening, to improve sleep quality and circadian health.
  • Utilizing Technology:
  • LumeBox: A recommended device for at-home RLT, offering both red and near-infrared light therapy.

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Conclusion

  • Light therapy is a versatile tool with diverse applications in health and wellness, emphasizing the importance of integrating natural light exposure into daily routines.
  • The episode encourages listeners to educate themselves about light therapy and consider its applications for personal health.

Call to Action

  • Share insights from the episode and implement light therapy practices for health benefits.
  • Stay tuned for future episodes featuring expert guests and deep dives into various health topics.

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Resources Mentioned:

  • [LumeBox Red Light Therapy Device](https://thelumebox.com/model) - Special discount for listeners.

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Closing Note: The episode serves as an educational resource on the emerging field of light therapy, with a strong emphasis on personal empowerment through knowledge and action.

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Transcript

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0:00You are now listening to The Model Health Show with Shawn Stevenson Stevenson. For more, visit themodelhealthshow.com. I'm about to share four ways that light is being used as medicine, so prepare to have your mind blown. Number one is to reduce pain. A meta-analysis published in the BMJ sought to see if red light therapy could reduce pain in people with osteoarthritis versus a placebo. The study included 1 ,063 people and it found that red light therapy significantly reduced knee pain in study participants. Not only that, the results appeared to have semi-lasting effects, with benefits seen up to three months after treatment.

0:41The researchers stated, quote, The positive effect from red light therapy seems to last longer than those of widely prescribed painkiller drugs, unquote. Number two, light can dramatically improve skin health. A double-blind, randomized, placebo-controlled trial took 76 patients with notable wrinkles and treated half of their face with red light therapy, while other participants received a fake light treatment that was used as a placebo. Participants received two light therapy treatments each week for four weeks. Now here's what happened. With just four weeks of treatment, participants had up to a 36 % reduction in wrinkles and up to a 20 % increase in skin elasticity.

1:21Number three, what about killing pathogens? Well, a particular type of far ultraviolet light that's deemed to be safe for humans is absolutely killer to staph bacteria. The light functions like an invisible John Wick, the Baba Yaga, taking out 98.4 % of the pathogen load in a room within minutes. Again, this bacteria is the leading cause of staph infections and light can take it out like a luminous assassin. Number four, light can improve your muscle strength gains. This incredible randomized controlled human trial tested the effect of red light therapy on muscle performance and strength gains.

1:59The study took 36 men who were beginners or moderately active and placed them into one of three groups. Group 1 implemented strength training only. Group 2 implemented strength training plus a short red light therapy session on their quads after training. And Group 3 was used as a control who didn't either. The scientists used progressive leg press training to track muscle performance. Here's what happened at the end of the 12-week study. The group that utilized strength training increased their one rep max on the leg press by 26%. Not too shabby. While the group that combined leg press training with red light therapy increased their one rep max on the leg press by 55%.

2:38This was more than double the improvement seen in the training only group. What we covered is just the appetizer. Now let's dive into the full meal by uncovering how light therapy actually works, plus many of the other life-changing ways that it can transform your health starting now. Scientists have known for years that certain wavelengths of light can instantly transform human biology. Various forms of light therapy have been found to accelerate healing, improve physical function, improve metabolic health, and much, much more. But how? Well, let's take a look at this from multiple levels because it works on multiple levels.

3:16Level 1. The human body is highly sensitive to light inputs. We don't just have photoreceptors in our eyes. We have photoreceptors all over our skin, all the way to deep within our central nervous system. We have these photoreceptors that pick up light and send data to virtually every single cell and every single cellular organelle in our bodies instantaneously. And this process is specifically to control your circadian timing system. Now this matters very much, so listen closely. You have circadian clocks that are nestled within trillions of cells in your body. And these circadian clocks are functional genes and proteins that control the function of all of your other genes and proteins.

4:10Essentially everything your body does and the rate at which it does things are controlled by these circadian clocks. from which hormones are getting produced and at what amounts, to digestive function, to cognitive function, to regulating inflammation and repairing tissues, and much, much more. These circadian clocks are master regulators of your biology. And their number one influencer is the light. This is precisely why so many studies are noting how light influences our gene expression. Take getting a BBL, for example. not that BBL. I'm talking about something called broadband light therapy and a study conducted by scientists at Stanford University and published in the Journal of Investigative Dermatology found that over 1 ,200 of our genes associated with skin aging were quote rejuvenated after broadband light treatment.

5:09Said another way the expression of these genes became similar to a more youthful version of their skin. So again, level one is the fact that our circadian system, genes, and overall biology is highly influenced by light. Now level two is where we find most of the notable scientific explanation as to why light therapy, specifically red light therapy, is so effective. And it has to do with the impact that light has on the energy power plants of our cells, the mitochondria. Yes, our mitochondria are the primary producers of the energy to run all of our cellular processes, but our mitochondria are far more than glorified power plants.

5:53They're also environmental sensors. Based on the inputs that they receive, they influence everything from cellular maintenance and repair to programmed cell death and recycling. Our mitochondria are so vital to our biology that they make up a huge chunk of our physical body. In fact, mitochondria account for about 10 % of the weight of an adult human's body. That's a lot of mitochondria. Now being environmental sensors, one of the most impactful controllers of mitochondrial function is light. Specific wavelengths of light, like what's utilized in red light therapy, pass through the walls of your mitochondria and interact with a key enzyme called cytochrome C oxidase.

6:43This enzyme acts sort of like a gatekeeper. It helps to move electrons along the electron transport chain so that ATP, the energy currency of the body, can be produced efficiently. The red light is actually absorbed by cytochrome C oxidase, triggering it to release nitric oxide, which instantly makes oxygen more accessible. The mitochondria can now make more ATP, giving the cell more usable energy. Said in super simple terms, red light and near-infrared light act like a gentle nudge to your cell's power plants, freeing up the machinery that makes energy. More efficient mitochondria means more ATP, means better cellular repair and regeneration, reduced oxidative stress, and vastly healthier tissues overall.

7:37Now that's two levels down, and level three is where we get to the very real but largely unexplainable domain of quantum science. When we talk about photons or light absorption by molecules, we're inherently talking about the realm of quantum mechanics. Not only do we as human beings emit light, You are emitting infrared light. If you had on some of those night vision goggles, you could see that you are emitting light. You are a light being in many different ways. But again, we want to stay more grounded and tangible in this description. And with that being said, the light channels that we are emitting, we are also highly influenced and susceptible to light inputs as well.

8:26This is truly what's making us up and influencing us as sentient beings. Now, there was a time when we believed that the atoms that make us up were mostly empty space. Today, we know that the empty spaces are essentially fuzzy clouds of probability. The so-called empty space is full of fluctuations with particles popping in and out of existence. This is truly mind-bending stuff, but this is the reality that we exist in. The way that light influences us is beyond anything that we can fully understand. But what we do know is absolutely amazing. And with that said, let's take a look at another profound effect that light therapy, aka photobiomodulation, has on human health.

9:16It's well established that our thyroid is a master regulator of our overall metabolism. The prevalence of hypothyroidism has grown over 1 ,000 % since the 1970s. Largely driven by chronic autoimmune thyroiditis, the most common treatment is lifelong medication. But what if there was something else that could be helpful? Well, a team of scientists took 43 patients with a history of levothyroxine medication use for autoimmune hypothyroidism to analyze the impact that red light therapy could have on their thyroid function. The randomized placebo-controlled trial had about half of the patients receive 10 sessions of red light therapy and the other half received 10 sessions of fake red light therapy.

10:08Again, we can create an appearance, but it doesn't necessarily mean that it has the wavelengths that we're actually looking for. Here's what they found at the end of the nine-month follow-up period. At the end of the study, the participants in the red light therapy group were able to cut their medication dose by two-thirds versus the placebo group. The red light therapy enabled the patients to have approximately 64 % less medication, a 64 % reduction in level thyroxine requirement. Additionally, the researchers found that red light therapy led to a significant reduction in some of their autoimmune parameters as well.

10:54And, and listen to this, they noted improvements to the thyroid tissue itself. These are things that aren't supposed to be possible in conventional medicine to regenerate thyroid tissue. This is so remarkable, so remarkable. We have so many incredible tools that are available to us. And again, it's about education and it's about empowerment. And what's so amazing is that we can utilize this incredible technology right in our own homes. This is something I've been utilizing for myself and my family's health for many years. And of course, like being able to over time get these different highfalutin red light box panels, like some of this stuff can be very expensive and also going places for various treatments.

11:46And now you probably see out there, they've got these incredible innovations with like red light mask, but this is one of the things that's seen, whether it's physical therapy, whether it is, again, treatment for autoimmune conditions, whether this is treatments for estheticians and skin health. There's so many science-backed applications, but again, those treatments can be very expensive and really add up. But what I found to be my personal favorite when it comes to red light therapy, and I actually keep this device right on the arm of my couch at all times. It's a portable device and is designed by an incredible physician and inventor, Dr.

12:24Vivian Chin. And it's registered with the FDA and it provides both red light therapy and near infrared light therapy in one device without the damaging UV rays. The wavelengths and radiance have been verified in third-party labs, and it meets the IEC safety standards for electrical and EMF safety. It's literally the Swiss Army knife of red light devices. It's lightweight. It's portable. I actually have mine right here. And again, it's portable. This is always on the arm of my couch, and I travel with this as well. It's great for post-workout recovery, for my son who plays AAU basketball post-game.

13:09So we got a lot of uses for it when we're traveling as well. But again, it's great for skin health and so many other applications that we've already covered. Again, if we're talking about an aspect of the human body and a certain treatment that we want to undertake, we got to understand certain things can be just a few minutes, a couple of times a week. certain other things can take months of consistent use to see notable difference. But truly, there is nothing else like the Loom Box. The Loom Box is the very best red light therapy device. Again, it's like a Swiss army knife, super easy to use.

13:47And Dr. Vivian Chen, the inventor, an incredible physician as well. She is also one of the most intelligent, most insightful, and also most generous people that I've ever met. She's absolutely amazing. And she shared with me that for my family, my friends, and my community, she's going to be giving$260 off of the Loom Box. So you can grab your own Loom Box right now by going to theloombox.com forward slash model. That's T-H-E-L-U-M-E-B-O-X.com forward slash model. And you're going to automatically receive the Sean model code that will get you$260 off. It's an incredible opportunity, again, to own your very own science-backed red light therapy device.

14:46Head over to theloombox.com forward slash model. Now, as of this recording, there are over 2 ,000 peer-reviewed published studies on red light therapy and a variety of benefits to human health. Light is one of the most versatile and powerful tools being utilized in medicine today, and its applications are only growing. Let's take a look at some of the other uses in medicine and physical transformation that are being utilized today. Another way that red light is being utilized today is for its impact on body fat reduction. In a study titled, Efficacy of Low-Level Laser Therapy, that's red light therapy, for body contouring and spot fat reduction, this study took 40 men and women ages 18 to 65 with obesity and randomly placed them into a red light treatment group or a control group.

15:44This was an intensive treatment. Keep in mind, subjects' waistlines were treated for 30 minutes, twice a week for four weeks. Again, this is intensive. It's a lot. And subjects were asked not to change their diets or exercise habits. All right, so no changes to lifestyle, just getting this red light therapy treatment. Here's what happened. The researchers found that cumulative girth loss after four weeks was about 2.15 centimeters in participants' waistlines who utilized the red light therapy. The researchers stated, quote, Red light therapy achieved safe and significant girth loss sustained over repeated treatments and cumulative over four weeks of eight treatments.

16:33The girth loss from the waist gave clinically and statistically significant cosmetic improvement, unquote. I've never heard girth said so much in a study, but there you have it. Now I want you to keep in mind, light is incredibly powerful. It's incredibly diverse. It operates in ways far beyond our understanding. And there isn't just one spectrum of light. Obviously, there is an entire vast cascade of wavelengths of light. And another type of light therapy that has been used to great effect is green light therapy. And let's look at a study specifically in regards to green light therapy and migraines.

17:20A study conducted by researchers at the University of Arizona recruited 29 patients who were suffering with episodic or chronic migraines. This was a well-constructed crossover study that treated patients with white light therapy for one phase for 10 weeks, and they have a washout period, and they treated them with green light therapy for a separate 10 weeks. Here's what they found after compiling the data. Green light therapy far outperformed white light therapy and significantly reduced the number of migraine days in people with episodic migraines or chronic migraines. Additionally, green light therapy significantly improved multiple secondary outcome measures, including quality of life, and it reduced the intensity and duration of the migraine attacks if they did happen.

18:14That's incredible. Again, just being able to have something to help. Now, what about mental health? We've obviously been talking a lot about physical health, but what about mental health applications? Now, it's important to keep in mind that physical health and mental health are one in the same. They're intimately combined. And separating them has been a big part of the reason why we've been failing at successfully treating mental health conditions. And they've continued to skyrocket in our culture. Mental health is physical health and vice versa. Now, keeping that in mind with all the context and the data that we have on supporting mental health with addressing the basics that our genes expect from us, plenty of quality movement, high quality sleep, good nutrition, being able to manage and modulate and process stress.

19:10Just checking some of these basic boxes can make dramatic changes with our physical and mental health, of course. But alongside our high level of treatment for mental health conditions with pharmaceutical medications, are there any other tools that can be utilized to great advantage? In an analysis cited in the journal Frontiers in Psychology, detailed how light therapy significantly improves symptoms of depression, increases mental alertness, stimulates serotonin production, and even helps to improve sleep quality. there really isn't a place where light isn't impactful for our health. So I wanted to provide this masterclass on this subject matter so that you understand the power that these influences have, you know, but also keeping in mind that a lot of the science has been pointing to the negative impacts of specifically blue light in our culture today due to our tech devices.

20:14Now, if we had a different context where maybe it was just, again, a little therapeutic amount of this stuff, it might stimulate some benefit. But chronically being on our devices, we know that this blue light deeply impacts our circadian timing system, leading to, for example, using our devices in the evening. We've got several studies on this now, finding that it suppresses our release, our production and release of melatonin and increases our stress hormones like cortisol. So the timing of these things, the exposure, but in particular when it comes to blue light, not labeling it as quote bad light, but just being able to keep things in their proper perspective and understand that all these forms of light that we would naturally be exposed to if we were living in natural conditions.

21:05And this is where we give a special shout out to the sun. Shout out to that flaming ball that enables us to have life here on planet earth. All right. The ultimate source of light therapy and being able to have a healthy amount of time with sunlight exposure on a regular basis is vital to our health in so many different ways. And we evolved with this exposure and this interaction. And what happens when we pull ourselves away from that and live most of our lives indoors? The amount of time we spend indoors now is, it's absurd. It doesn't even remotely compare to our ancestors. And with that being said, having that as a practice, And also, you know, there are some really fascinating things regarding moonlight as well.

22:00But moonlight is sunlight. All right. Moonlight is sunlight. But that influence on our circadian timing system as well and our hormones as well. Are we getting these inputs or are we flooding ourselves with all of this blue light in the evening versus getting some exposure to moonlight? And or, this is one of the great innovations, mimicking these light exposures by having those reddish lights, reddish orange hues, right? So whether this is a red light lamp or like a salt lamp or those kind of things in the evening, a lot of people have really hopped on board with that and changing the spectrum of light that we're exposed to, what our families are exposed to in the evening.

22:44So it's just keeping all of these things in perspective and utilizing light to our benefit. It's what we have the science and the capability to do today. And it's just another tool in our superhero utility belt to deliver incredible health and wellness and also to help us to treat and recover from the things that ail us. whether this is accelerating the healing of an injury or it's helping to improve an autoimmune condition. We've got science on all of this now when it comes to light therapy. I appreciate you so very much for hanging out with me today and making a decision to learn, to be empowered.

23:28And most importantly, again, knowledge is not power. Knowledge applied is power. So share what you've learned with the people that you care about. Put some things into practice. be proactive about utilizing light therapy because it is one of the incredible tools that we have access to today and of course you can share this out on your favorite podcast app take a screenshot of this episode share it on instagram x facebook wherever you're hanging out and listen i've got some incredible i can't even begin to tell you some incredible master classes and world-class guests coming your way very, very soon.

24:05So make sure to stay tuned. Take care. Have an amazing day and I'll talk with you soon.

From the publisher

Red light therapy has started to gain traction in popular culture. From sports medicine recovery to beauty treatments, more and more people are starting to catch on to the benefits of using red light. But why does red light therapy work? And what are its science-backed benefit?

On today’s show, we’re going to dive into the science of red light therapy. You’re going to learn how light therapy can help reduce pain, enhance skin quality, improve the symptoms of certain disorders, and so much more!

You’re also going to learn about other types of light therapy, like ultraviolet and green light therapy. We’re going to discuss the health benefits of getting adequate sunlight, why human biology is so responsive to input from light sources, and how to integrate more light into your routine. Enjoy!  

In this episode you’ll discover: 

The link between red light exposure and wrinkle reduction. (0:51)

Which bacteria has been shown to be reduced by far UV light. (1:22)

How red light therapy can help with muscle growth. (1:50)

The science behind why the human body is so responsive to light. (2:55)

How your circadian timing system works. (3:55)

The #1 influencer of your circadian clocks. (5:10)

How mitochondria respond to red light therapy. (6:24)

A fascinating study on hypothyroidism and red light therapy. (9:57)

The link between light therapy and fat loss. (15:11)

What the ultimate source of light therapy is. (20:56)

Items mentioned in this episode include: 

⁠Thelumebox.com/model⁠  -  Experience the next-level benefits of red light therapy at home? Enjoy an exclusive $260 off the premium LUMEBOX red light therapy system, designed to boost recovery, skin health, and overall vitality.

Be sure you are subscribed to this podcast to automatically receive your episodes:  

⁠Apple Podcasts⁠

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⁠Soundcloud⁠

⁠Pandora⁠

⁠YouTube⁠  

This episode of The Model Health Show is brought to you by Lumebox. Clinically-designed to deliver both red (660 nm) and near-infrared (850 nm) wavelengths in one sleek handheld device.Independently lab-tested for performance: more coverage, higher irradiance, greater effect.

Perfect for skin health, pain support, recovery and overall vitality — in your routine, on your terms. Use this link to claim your discount: ⁠thelumebox.com/model⁠ to claim or $260 off your device.  

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