Episode 129 - Facts You Have Never Heard About Red Light
In this episode, Hunter and our creative director, Carlos talked about red light and its benefits frequently. Together they dig into some of the lesser know benefits of red light therapy.
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Color Light therapy is based on the idea of restoring balance by applying color to the body. Its history is rooted as far back as the Mayan culture.
In India, Ayurveda, an ancient form of medicine practiced for thousands of years, is based on the idea that every individual contains five elements of the universe that are present in specific proportions unique to each individual, including their personality type and constitution. When these elements are out of balance, Ayurveda works with the energies inherent in the colors of the spectrum to restore this balance.
In ancient Egypt the art of healing with color was founded in the Hermetic tradition, the Ancient Egyptians and Greeks used colored minerals, stones, crystals, salves, and dyes as remedies, and painted treatment sanctuaries in various shades of color.
In China, traditional Chinese medicine incorporates color to be associated with each organ and elemental system. This healing method looks at the idea that every individual is a balance. The first color wheel was invented by Sir Isaac Newton. He split white sunlight into red, orange, yellow, green, cyan, and blue. He then joined the two ends of the color spectrum together to show the natural progression of colors.
Light Therapy has been valued throughout history as a remarkable source of healing. Today, the therapeutic applications of light and color are being investigated in major hospitals and research centers worldwide. Results indicate that full-spectrum, ultraviolet, colored, and laser light can have therapeutic value for a range of conditions from chronic pain and depression to immune disorders.
Light Therapy has been reported, as part of a healthy lifestyle, to temporarily reduce swelling, relieve pain, decrease inflammation, accelerate open wound healing and greatly reduce overall recovery after medical/surgical procedures. Patients have demonstrated an increased range of motion, decreased muscle tension and spasm, and improved circulation.
Rejuvenating LED light therapy can be used for temporary pain management such as joint and back pain, sore or torn muscles, sprains, arthritis, post-surgical scars, burns, wounds, and more. When used with infrared technology, light therapy (phototherapy) is one of the most effective and non-invasive ways to improve overall wellness.
Light therapy is also used to temporarily relieve Seasonal Affective Disorder (SAD). SAD affects individuals when the lack of sunlight results in seasonal depression. Phototherapy helps with SAD by resetting the internal biological clock (Circadian rhythms), helping individuals sleep better, and regulate their mood. Even companies, such as GE and Philips, have created phototherapeutic products to improve and regulate mood.
Light therapy is also a growing treatment for anti-aging. Many individuals have seen a temporary reduction in the appearance of fine lines, wrinkles, crow’s feet, and age spots.
Light therapy is “effective at improving the appearance of the face, neck, and chest by reducing the signs of aging, wrinkles and age spots”, says Web M.D. Combined with infrared therapy, LED phototherapy can be a great way to revitalize skin.
Color is light split into different wavelengths vibrating at different speeds and at different frequencies. Objects that ABSORB all wavelengths and DO NOT reflect are black in nature. Objects that REFLECT all wavelengths and DO reflect are white in nature. Between black and white lies COLOR. Colors are wavelengths of energy that, to us, appear as color because of the potential and capabilities of the object to either absorb or reflect the energy.
In the early 1990s, RLT was used by scientists to help grow plants in space. The scientists found that the intense light from red light-emitting diodes (LEDs) helped promote the growth and photosynthesis of plant cells.
The red light was then studied for its potential application in medicine, more specifically to find out if RLT could increase energy inside human cells. The researchers hoped that RLT could be an effective way to treat the muscle atrophy, slow wound healing, and bone density issues caused by weightlessness during space travel.
You may have heard of red light therapy (RLT) by its other names, which include:
Red is called “The Great Healer”. So far is the most popular light therapy. To wind down before bed, use red light. “The color signals that it’s night, which may encourage the body to produce melatonin,” says Michael Breus, Ph.D., an advisory board member for SleepScore Labs.
Red light can also improve your workout. Just one to five minutes of exposure to red and infrared light right before exercise boosted strength and prevented soreness, says Ernesto Leal-Junior, Ph.D., the head of the Laboratory of Phototherapy in Sports and Exercise at Nove de Julho University in Brazil. “Certain wavelengths of red and infrared light-660 to 905 nanometers-reach skeletal muscle tissue, stimulating the mitochondria to produce more ATP, a substance that cells use as fuel,” he says.
Green is the universal healing color. Originally, the color of love. Green is midway in the color spectrum; therefore, it contains both a physical nature and a spiritual nature, in equal balance and in equal harmony.
Gazing at green light can reduce chronic pain (caused by fibromyalgia or migraines, for example) by up to 60 percent, according to a study in the journal Pain, and animal studies have shown that the beneficial effects can last up to nine days. “Looking at green light seems to lead to an increase in the body’s production of enkephalins, pain-killing opioid-like chemicals. And it reduces inflammation, which plays a role in many chronic pain conditions,” says researcher Mohab Ibrahim, M.D., Ph.D.
More studies are needed before doctors can make recommendations on how and how often to use green light to treat migraines and other pain, and Dr. Ibrahim says you should see a physician before trying to treat yourself at home. But at this point research indicates that exposing yourself to an hour or two every night-either by using a green light bulb in a lamp or by wearing glasses fitted with tinted optical filters-may decrease migraines and other types of chronic pain
Helps to treat and prevent hyper-pigmentation by inhibiting the production of excess melanin which then prevents it from traveling to the surface. It will help break up the melanin clusters that are already on the surface.
Yellow helps awaken mental inspiration arousing a higher mentality. Thus, it is an excellent color for nervous or nerve-related conditions or ailments; fueling the solar plexus. Yellow has a very enriching effect upon the intellect. Yellow can be used for conditions of the stomach, liver, and intestines. It can help the pores of the skin by repairing scarred tissue. These rays have an alkalizing effect which strengthens the nerves. Awakening, inspiring, and vitally stimulating the higher mind promoting self-control. Typical diseases treated by yellow are constipation, gas, liver troubles, diabetes, eczema, and nervous exhaustion. Providing clarity of thought, increasing awareness, stimulating interest, and curiosity yellow energy is related to the ability to perceive or understand.
The yellow is used for treating redness, flushing, irritation, and Rosacea. It may also reduce the appearance of the tiny blood vessels on the nose and face.
Blue light therapy technology is an additional option for the treatment of acne. Research has shown in-office and at-home systems produce positive results.
“Blue light therapy effectively helps alleviate this common skin condition affecting 50 million Americans and 94 percent of all females, according to Judith Hellman, MD, a board-certified dermatologist, in practice in New York City. Dr. Hellman, who practices medical dermatology and specializes in dermatological surgery, laser surgery, and anti-aging skin treatments, explains how the blue light treatment system works for acne, its uses, and her clinical experience with the technology.
It is used as a gentle acne treatment to control oil production in the skin as well as reduce inflammation. It also promotes the synthesis of protein and collagen.
Orange Light
Orange has a freeing action upon the mind, relieving repression. Because orange is a blend of red and yellow, it combines physical energy with mental wisdom, inducing a transformation between lower physical reaction and higher mental response. Thus, it is often referred to as “The Wisdom Ray.” Orange is warm, cheering, and non-constricting.
Through orange, we are able to heal the physical body (red) and, at the same time, induce within the mind (yellow) greater understanding. Orange helps assimilate new ideas. Orange is the best emotional stimulant, helping to remove inhibitions paving independent social behavior. Bring joy to your workday and strengthen your appetite for life. Orange aids in repairing inflammation of the kidneys, gallstones, menstrual cramps, epilepsy, wet cough, and all sinus conditions.
Purple Light
Violet is the last color we can see before light passes on to ultra-violet. Violet purifies our thoughts and feelings giving us inspiration in all undertakings. The violet energy connects us to our spiritual self bringing guidance, wisdom, and inner strength and enhances artistic talent and creativity. Leonardo da Vinci proclaimed that you can increase the power of meditation ten-fold by meditating under the gentle rays of Violet, as found in church windows.
Light therapy uses colors for their proposed wellness abilities in treating emotional and physical disturbances. Light therapy is based on the premise that different colors evoke different responses in people. For example, some colors are considered to be stimulating, whereas others may be soothing. Color therapy has been suggested for many uses, based on tradition or on scientific theories. Consult with a health care provider before using color therapy for any use.
Infrared Light
Infrared light penetrates to the inner layers of the skin at about 2 to 7 centimeters deep. Hence, it reaches the muscles, nerves, and even the bones. Many studies have shown that a frequency of infrared light, with wavelengths from 700 to 1,000 nanometers, is best used for healing inflammatory conditions.
The use of electricity for healing purposes began in 2,750 BC when people used electric eels to give electric shocks. Electricity and magnetism were used in people with just little success. However, in 1975, transcutaneous electrical stimulation (TENS) was developed to treat chronic pain. It was not until recently that infrared therapy was developed to improve wound healing, reduce the pain caused by arthritis, boost endorphin levels, and bioactivate neuromodulators.
Infrared therapy technology allows people to harness the benefits of the sun, without being exposed to harmful ultraviolet rays. Also, infrared therapy is safe and effective, without adverse side effects. As a matter of fact, infrared light is safe and is used even for infants in neonatal intensive care.
Infrared light is absorbed by the photoreceptors in cells. Once absorbed, the light energy kickstarts a series of metabolic events, triggering several natural processes of the body on a cellular level.
Kaiyan Medical
In Kaiyan, we are in love with light therapy. We believe in the natural balance in our bodies. We develop devices such as the Aduro mask which will provide you with the full range of color light therapies.
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Geldschlager S. Osteopathic versus orthopedic treatments for chronic epicondylopathia humeri radialis: a randomized controlled trial. Forsch Komplementarmed Klass Naturheilkd 2004;Apr, 11(2):93-97.
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Ohara M, Kawashima Y, Kitajima s, et al. Inhibition Of lung metastasis of B16 melanoma cells exposed to blue light in mice. Int J Molecular Medicine 2002;10(6):701-705.
Wileman SM, Eagles JM, Andrew JE, et al. Light therapy for seasonal affective disorder in primary care: randomised controlled trial. Br J Psych 2001;178:311-316.
Wohlfarth H, Schultz A. The effect of colour psychodynamic environment modification on sound levels in elementary schools. Int J Biosocial Res 2002;(5):12-19.
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Chakra (Sanskrit: चक्र, IAST: cakra, Pali: cakka, lit. wheel, circle; English: /ˈtʃʌk-, ˈtʃækrə/ CHUK-, CHAK-rə[2])) means “wheel” and refers to energy points in your body. They are thought to be spinning disks of energy that should stay “open” and aligned, as they correspond to bundles of nerves, major organs, and areas of our energetic body that affect our emotional and physical well-being.
The concept is found in the early traditions of Hinduism. Beliefs differ between the Indian religions, with many Buddhist texts consistently mentioning five chakras, while Hindu sources offer six or even seven. Early Sanskrit texts speak of them both as meditative visualizations combining flowers and mantras and as physical entities in the body. Some modern interpreters speak of them as complexes of electromagnetic variety, the precise degree and variety of which directly arise from a synthetic average of all positive and negative so-called “fields”, thus eventuating the complex Nadi. Within kundalini yoga, the techniques of breath exercises, visualizations, mudras, bandhas, kriyas, and mantras are focused on manipulating the flow of subtle energy through chakras
Some say there are 114 different chakras, but there are seven main chakras that run along your spine. These are the chakras that most of us are referring to when we talk about them.
Each of these seven main chakras has a corresponding number, name, color, specific area of the spine from the sacrum to the crown of the head, and health focus.
We are gonna explore the green chakra, the heart chakra.
Sanskrit Anahata means “sound produced without touching two parts” and at the same time, it means “pure” or “clean, stainless”. The name of this chakra signifies the state of freshness that appears when we are able to become detached and to look at the different and apparently contradictory experiences of life with a state of openness. Normally we are not used to the effect produced by the confrontation of the two opposite forces. At the level of Anahata chakra appears the possibility to integrate the two opposite forces and obtain the effect (sound, in this case), without the two forces being confronted (without touching of the two parts).
Within it is a yantra of two intersecting triangles, forming a hexagram, symbolizing a union of the male and female as well as being the esoteric symbol for the element of air (vayu). The seed mantra of air, Yam, is at its center. The presiding deity is Ishana Rudra Shiva, and the Shakti is Kakini.In esoteric Buddhism, this Chakra is called Dharma and is generally considered to be the petal lotus of “Essential nature” and corresponding to the second state of Four Noble Truths.
The green color is composed of yellow and blue in equal parts. We can say is composed of the sun and the sky. Green is the energy of love and transformation. It allows you to transform your ego and the needs of your lower chakras and open up to love. To become more loving and compassionate.
It is at the heart center where the energies of lower chakras (once the needs are fulfilled and satisfied) can be transformed and integrated into a more spiritual aspect of yourself. This is where you reach beyond yourself and connect with something greater, wider, and deeper.
Green is the color of growth, life, and balance. In Chinese traditional medicine, through balance, you find the center from which you can love, form healthy and nourishing relationships, and give and receive love.
The energy of green is soothing and calming, like a blanket of soft grass underneath your feet. It is the color of nature, grass, and trees.
On a physical level green relates to the heart, lungs, chest, shoulders, arms, breasts, thymus gland, and cardiac nerve plexus.
People with strong green energy stand tall and radiate openness. Those with weak green energy appear tight in the upper body, they are slouching — their shoulders are drawn forward, protecting the heart center, and their head and neck are brought forward as well.
Gifts
Challenges
The spiritual aspect of green energy is instinctual knowing and growing into the spirit. The developmental task of the heart chakra is forming relationships with family and friends. On the spiritual level, we must always remember that we are entering the mystery and power of love.
Gifts
Challenges
Next time you stand still and look at the green color, make sure to feel the serenity, calmness, balance and feeling kindness and compassion for yourself and others.
Be green, see green, visualize green, breathe green, feel green, be calm, be kind, practice kindness, forgive, and be love.
Migraines are considered one of the most disabling illnesses in the world, most of whom are unable to function normally during a migraine. Migraines are much worse than the common headache - bringing on excruciating pain and other symptoms like dizziness, blurred vision, or vomiting.
Green light therapy lamps have been recommended by Harvard Medical School headache specialist Rami Burstein who found that light exacerbates migraines. Photophobia (extreme sensitivity to light) is associated with more than 80% of migraine attacks - but the green light in his research is different. He found that a narrow wavelength of green light is less aggravating than other colors because it sends a smaller, less disruptive signal to the brain via the visual cortex.
Stueids have been recording of dura- and light-sensitive thalamic neurons in rats to show that green activates cone-driven retinal pathways to a lesser extent than white, blue and red; that thalamic neurons are most responsive to blue and least responsive to green; and that cortical responses to green are significantly smaller than those generated by blue, amber and red lights.
"It became apparent that we should be able to use a narrow band of green light to treat photophobia," Burstein says.
Now patients could put their kids to bed, read a book, or enjoy a hearty meal with friends - instead of being isolated in darkness. Not only did green light fail to trigger pain, his research even found that it has a soothing effect.
Padma Gulur, who does not work with Burstein, is looking into the possibility that green light might relieve other forms of pain besides migraines. Already one year into a clinical trial - testing the effects of green, blue, or white light on people's post surgery or fibromyalgia pain experience - Gulur says the data looks promising that green light therapy could provide benefit to those in pain. Gulur, a Duke University anesthesiologist, says that finding a way to reduce pain without drugs is essential, given the addictive nature and side effects of opioids and other pain relievers. Not only did green light fail to trigger pain, his research even found that it had a soothing effect.
"We have very few options that are safe, easy to comply with, and have an impact on the pain experience. So it was a quest for non-pharmacological options that could help patients in pain that led to looking at the potential for light-based therapy," she says
Mohab Ibrahim, an anesthesiologist at the University of Arizona, found that when rats were exposed to green light, they felt less pain - or, at least, they were able to tolerate more discomfort in the form of heat or pressure. Wondering which mattered more - the light washing over the skin or contacting the eyes - Irbahim created tiny, rat-sized contact lenses. He found that when rats were wearing the contact lenses, which let only green light through, they similarly showed less discomfort.
Green light exposure has been found to significantly reduce migraine intensity and discomfort from fibromyalgia. In Kaiyan Medical we can create your green light therapy device to treat migraine and other conditions.
A circadian rhythm is a natural bodily process that happens roughly every 24-hours. It’s a cycle, like sleeping & waking, or eating & digesting, that completes & restarts daily. Our circadian rhythms are tied to the earth’s rotation and light/dark cycle, but they are also encoded in our genes.
We are naturally diurnal animals, meaning we’re awake during the day and asleep when dark. It’s how we evolved, like how mice are designed to be nocturnal mammals that sleep during the day and forage at night.
Another example of an internal process operating on a circadian rhythm is the human digestive system. Our digestive system cannot create and burn fat simultaneously, so our cells alternate according to a circadian rhythm. When we’re awake and actively taking in calories, our digestive system breaks down food and creates stored fat. When we sleep, our stored fat keeps our bodies fueled.
Going against your natural rhythms and not establishing routines can have systemic effects, like sleep disturbances and metabolic slowdowns. Poor sleep can affect hormone production as well as your ability to recover from injury and overcome inflammation.
Dr. Satchin Panda of the Salt Institute is the author of the book The Circadian Code, which discusses circadian biology in much greater detail. Dr. Panda writes about three “core rhythms” that our body aligns with.
Without artificial lighting and screens, we will typically sync with the planet’s day/night cycle: rising with the sun and sleeping when it’s dark. We’ve come a long way from those origins, but our bodies are still designed to work with an abundance of light during the day and restful sleep when it’s dark at night. If you sleep from 5 am to 2 pm every day, you may get enough sleep, but the quality of your sleep will likely not be as good.
Our bodies work best when we’re getting restful sleep every day. But even if you’re getting 7–8 hours, you may not be aligned with your body’s optimal sleep cycle.
According to Dr. Satchin Panda, our body has an 8 to 10-hour window for optimal food intake that begins when we take our first bite in the morning. Digestion of even a small bite of food takes hours, and efficiency slows dramatically once we’re outside that window. There’s a set window of time because our internal organs follow circadian rhythms to do their jobs, like processing food and liquids.
The stomach, liver, pancreas, and other key internal organs work best when our eating aligns with our circadian rhythm. Following a routine or schedule with your eating that allows your body to operate along the same patterns is more efficient for your digestion, nutrient absorption, and overall metabolism. Limiting your food intake to a specific window of time is also ideal.
Our bodies are programmed to shift into a night mode after the sun goes down. Heart rate and breathing slow, body temperature lower, and we usually go to sleep. When you’re exercising after dark, your body has to work hard to make and use all that energy and then start the recovery process late in the day. This can clash with your sleep cycle and the circadian rhythm of digestion & eating, making your recovery and fat burning less efficient.
It might seem obvious, but our bodies are made to be active while we’re awake. Physical activity during the day, in line with our sleep and digestion cycles, is a key part of a balanced, healthy lifestyle. Exercise has too many health benefits to list, but it’s most beneficial when you get your main activity done during the day, not late at night.
Light intake is one of the most important factors in sleep and circadian rhythm. The brain interprets light as a sign of when to be asleep and awake. Your circadian rhythm is designed around the sun, but the bright lights and screens of modern life can knock the body’s natural signals and rhythms out of whack. If you stare at a bright screen at midnight, your body may be tired, but your brain is getting the message that it’s time to be awake. Too much bright, artificial light after dark can make it much more difficult to sleep and establish a healthy wake/rise schedule.
Two hormones that regulate the sleep cycle are directly affected by light. Cortisol, a steroid hormone produced by your adrenal glands, helps wake us up and keep us going. Cortisol levels tend to be highest in the mornings and lowest when we’re in our deepest sleep, typically around 3–4 am. Bright artificial light can stimulate cortisol levels that keep you awake, as documented in clinical studies.
The hormone melatonin is a counterpart to cortisol. Produced by the pineal gland, melatonin helps you fall asleep and stay asleep. Your body usually starts producing melatonin in the early evening, when you’re starting to wind down and get closer to bedtime. Bright light, especially bright blue light from phones and computers, has disrupted melatonin production.
As humans, we are made of energy and fueled by light. While nutrition and exercise play a role in our well-being and health, light plays a crucial role in us functioning optimally. New and groundbreaking research is unearthing a new understanding of how our cells function and the evidence points to the power of light.
Through technological advancements in science, it’s discovered that our bodies operate similar to a battery. Wavelengths of light give us power, while our overall health determines our ability to receive and maintain the energy from light. And this is where light therapy comes into the equation.
Science has proven that our bodies interact with specific wavelengths that benefit our bodies in various ways.
Red light therapy devices, such as light therapy masks, shine red and near-infrared light onto the skin, stimulating the production of adenosine triphosphate (ATP) within the mitochondria. By stimulating ATP, damaged cells heal, and new cells are produced faster than normal. But we’ll talk more about that in-depth a little later.
Red light therapy comprises both red light and infrared wavelengths, penetrating through the skin’s layers, right into the cells. Red light wavelengths boost collagen and elastin and improve cell communication. It penetrates superficially and helps aid various skin conditions.
Near-infrared wavelengths stimulate healing, increase mitochondrial function, and improve blood flow and tissue oxygenation. Near-infrared wavelengths penetrate deeply into the body.
At the core of your body’s healing capabilities are the mitochondria. The mitochondria play a vital role in your internal organs and tissue, including the liver, skin, heart, and muscles. It’s in charge of the body’s energy supply via ATP (adenosine triphosphate).
With both working together, they provide energy to our body and maintain the cell cycle and growth. This is why you’ll often hear the mitochondria referred to as the “powerhouse of the cell.”
Here's how the mitochondria is affected by red light:
Interestingly, our body weight is made of 70% water, with 99% of our bodies' molecules also made of water, making it a powerful component in red light therapy treatment.
Research by Prof Gerald Pollock of the University of Washington proved that water adjacent to a cell is structured water, also known as EZ water. This specific water forms a separation of charge, functioning in the body as positive and negative poles - similar to a battery.
While we’ve been talking about red light therapy, what does it actually mean? Typically, “red light therapy” refers to natural light treatments which deliver red and near-infrared wavelengths as natural sunlight using LEDs or cold lasers.
While you may think red light therapy includes all colors of light, it doesn’t. The term doesn’t include blue or white light, and it isn’t equivalent to full-spectrum light. Red light therapy doesn’t rely on heat, differentiating it from other light-based treatments such as infrared saunas and heat therapy.
Red light therapy is also known as RLT, photobiomodulation (PBM), phototherapy, LED therapy, LED light therapy, infrared therapy, low-level laser therapy, or low-level light therapy (LLLT).
As stated before, red light therapy works to heal the entire body and functions on multiple levels.
Red light therapy affects the body in multiple ways, including bodily systems:
Fascia
Fascia is the thin casing of connective tissue that surrounds virtually every organ, muscle, nerve fiber, blood vessel, and bone in place. While it performs as an internal structure for your body, the fascia also contains nerves, making it almost as sensitive as skin.
The fascia may look like a layer of tissue; however, it’s made up of interwoven layers of collagen and elastin fibers. The fascia is overlooked, yet over recent years, it has been the key to understanding how changes in one area of our body affect others. Red light therapy works to improve communication within the fascia network.
Gut-Brain Axis
The gut-brain axis connects the emotional and cognitive centers of the brain with peripheral intestinal functions. Recent research discovered the importance of gut microbiota concerning these interactions.
Red light therapy can positively influence mood and neuropsychological issues by the following:
Immune System
Red and near-infrared light penetrate through the skin into the cells, which results in low-dose metabolic stress that strengthens the cells’ anti-inflammatory and natural defense systems. In turn, the body becomes resilient to infections.
Safe and low exposure to red light therapy improves the body’s response to external viruses and bacteria. Red light therapy can influence the immune response in the following ways:
Circulatory System
Red light therapy is scientifically proven to increase the micro-circulation of blood and support the circulatory system as a whole by stimulating the development of new capillaries which carry oxygen throughout the body.
Proper oxygen supply and flow are essential for the proliferation of cells, protein synthesis, tissue restoration, inflammatory response, and angiogenesis. In addition, circulation is also responsible for waste elimination, specifically degenerated cells.
Nervous System
The nervous system includes the brain, spinal cord, neurons, and neural support cells, which is your body’s command center. It controls your movements, automatic responses, and other body systems such as digestion and breathing.
Red light therapy affects the nervous system in the following ways:
For all forms of nerve damage, red light therapy offers non-pharmaceutical treatment options.
Stem Cells
Red light therapy shows impressive results regarding stem cell growth, maximizing the potential of stem cell implantation for various medical needs. Therefore, red light therapy may show positive results after surgery to stimulate stem cells which repair tissues and organs.
In studies, red light therapy has proven to stimulate mesenchymal stem cells in bone marrow, enhancing their ability to reach the brain. This research shows the possibilities of using red light therapy to heal degenerative conditions, including Alzheimer’s, Parkinson’s disease, and dementia.
It’s clear red light therapy provides multilevel treatment to the body, becoming a popular natural and holistic option for both professionals and consumers, but where did it come from?
Light therapy technology isn’t new; it’s been around for decades as NASA experimented with red light therapy during the 1980s and 1990s. Over the past 10-20 years, red light therapy reached a breakthrough in LED lighting technology, allowing the production of safe and affordable clinical and at-home devices.
In 2016, Kaiyan Medical became the first leading manufacturer of red light therapy of affordable FDA-approved and MDASAP-approved light therapy devices.
We mentioned red light therapy being a holistic treatment option, but what does that mean. Holistic medicine is a full-body approach to healthcare. By focusing on the body, mind, and soul, the body receives the full support and care it needs to function optimally.
Principles of Holistic Medicine
Holistic medicine is based on the following principles:
The purpose of treatment is to identify the underlying cause of the disease, rather than treating only the symptoms.
While there are endless benefits the body receives from red light therapy, here are the six main benefits.
Photobiomodulation, in other words, red light therapy, has proven effective against carpal tunnel syndrome, mucositis, neck pain, menstrual cramps, temporomandibular joint pain, and neuropathic pain from amputation. It also significantly reduces the pain of hypersensitivity while improving sensorimotor function.
These improvements come after anti-inflammatory cells populate the injured area, providing long-lasting pain relief. In addition, it’s also been shown to provide effective relief by affecting the following:
Red light therapy has proven to be highly effective in rapidly treating wounds from burns, scars, bedsores, ulcers, surgery incisions, and diabetic neuropathy.
NASA strongly supports this claim as this technology was used in treating wounds. Red and near-infrared light proves effective in all four phases of the wound-healing process:
These processes are regulated by various factors connected via nitric oxide (NO) signaling release, adjusted by light energy.
An issue the body encounters when trying to heal a wound is low oxygen flow, and red light increases the flow of oxygen, speeding up the natural healing process. By reducing inflammation and increasing oxygenation of the wounded area, blood vessels can form, rapidly repairing the area, lessening pain and scarring.
By reducing pain, red light therapy eliminates the reliant on pharmaceutical painkillers during the healing process.
The human body receives energy on the cellular level, maintaining communication between organs and ensuring disease resistance.
A strong immune system works to protect the body from harmful bacteria and viruses at all times. With red light therapy, the body receives a boost of support as it releases nitric oxide and melatonin, two components involved in DNA repair and antimicrobial.
This process is called hormesis. Red and near-infrared wavelengths penetrate through the skin into the cells, causing mild metabolic stress, which stimulates cells to activate their anti-inflammatory and antioxidant response.
With the support of red light therapy, the body is better prepared to fight infections. Numerous studies have proven red light therapy to have the following effects on the immune system:
Inflammation in the body can be acute and topical (short-term, resulting from sprains, infections, and accidents) or chronic and general (long-term, caused by ongoing conditions).
Acute inflammation is a healthy bodily response; however, chronic and general inflammation can negatively impact long-term health.
As of today, the current treatment for inflammation is NSAID or steroid drugs, both having a detrimental effect on the healing process and long-term health. Red light therapy stimulates the body to activate its natural healing mechanism, reducing the health risks of long-term drug use.
Red light therapy decreases the number of inflammatory cells, increases fibroblast proliferation (cells that synthesize collagen and other matrix macromolecules), stimulates angiogenesis (creation of new blood vessels), and activates the body’s anti-inflammatory, antioxidant response.
The following conditions are connected with chronic and acute inflammation, all proving promising results with red light therapy treatment:
Red light therapy is extremely popular in competitive sports and performance. It offers natural and non-pharmaceutical treatment, which applies to many areas of the body.
Aside from the overwhelming benefits on overall health, red light therapy encourages muscles growth and repair by stimulating the production of ATP, which aids in faster recovery and better performance.
Red light therapy used before training prepares and strengthens the body while aiding muscle recovery after training.
Here are the scientifically documented effects of red light therapy:
Seasonal affective disorder (SAD) is a form of depressions, impacting 5% of Americans, specifically during the winter when there’s less natural sunlight. SAD is also known as seasonal depression or winter blues.
Many people treat SAD symptoms via bright white light treatment, mimicking the sun’s light daily. However, researchers recommend natural light treatment, like red light therapy, to help with light deficiency. Over recent years, physicians recommend red light therapy alongside psychotherapy and medication.
While many people are using red light therapy devices for at-home treatment, red light therapy systems are found in many clinical and professional settings:
Skincare Professionals: Red light therapy is a popular skincare treatment among Hollywood celebrities, including Kourtney Kardashian, Julia Roberts, and Emma Stone. Leading skincare professionals like dermatologists and aestheticians use red light therapy to help promote collagen production, reduce wrinkles, and treat skin conditions.
Health Practitioners: Health practitioners from all specialties are incorporating red light therapy into their practice. Dentists use it to reduce inflammation, physicians for mental health conditions, and oncologists for cancer side effects.
Natural Health Experts: Leading voices in the health and wellness industry such as Dr. Sarah Ballantyne, Ben Greenfield, and Dave Asprey strongly support the use of red light therapy. Paleo and Keto health experts like Robb Wolf, Mark Sisson, Luke Story, and Dr. Anthony Gustin also support red light therapy.
Sports Medicine Pros: The National Sports Association of Sports Medicine (NASM) adopted red light therapy to treat sports injuries. Top trainers and doctors, including Dr. Troy Van Biezen and Dr. Ara Suppiah, use red light therapy to heal their athletes.
Elite Pro Athletes: Professional athletes worldwide, including NFL stars like Patrick Peterson, UFC champion Anthony Pettis, and gold medal gymnast Sanne Weavers use red light therapy to enhance performance and quicken recovery.
Fitness & Training: World-renown fitness trainers, including Lacey Stone and Jorge Cruise, use red light therapy to enhance athletic performance and muscle recovery.
Supportive Cancer Care: The Multinational Association of Supportive Care in Cancer (MASCC) recommends the treatment of red light therapy for oral mucositis (OM), a common symptom of cancer treatment.
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The first formal description of Seasonal Affective Disorder (SAD), the most well-known psychiatric condition associated with seasonality in humans, was introduced in the mid-1980s by Rosenthal, who described a group of 29 patients living in a temperate climate who experienced depressive episodes characterized by hypersomnia, hyperphagia, and weight gain in the fall or winter, and whose symptoms remitted by the next spring or summer.
SAD was incorporated into the Diagnostic and Statistical Manual (DSM) of Mental Disorders III-R when “seasonal pattern” was introduced as a specifier for Major Depression and Bipolar Disorders. Subsequent revision in DSM-IV described SAD as “a regular temporal relationship between the onset of Major Depressive Episodes in Bipolar I (BPI) or Bipolar II (BPII) Disorder or Major Depressive Disorder (MDD), recurrent, and a particular time of the year.”
Today, SAD, or MDD with seasonal pattern, is defined as recurrent episodes of major depression that meet the following criteria: at least two consecutive years where the onset and offset of depressive symptoms occur at characteristic times with no non-seasonal episodes, a temporal relationship between onset of symptoms and time of year, a temporal relationship between remission of symptoms and time of year, and an outnumbering of seasonal compared to non-seasonal episodes throughout the lifetime of the patient.
To date, the pathophysiology of SAD is unclear. Early research into the mechanism of SAD focused on day length or photoperiod. This hypothesis posited that shorter days in winter, possibly mediated by a longer duration of nocturnal melatonin secretion, leads to depressed mood in susceptible individuals. To date, there is little data to support this hypothesis. Furthermore, given that bright light in the evening has not been as effective as that given in the morning, it now seems unlikely that the photoperiod is the underlying pathological mechanism of SAD.
Although some animal studies have implicated a direct effect of light on the midbrain (Miller, Miller, Obermeyer, Behan, & Benca, 1999; Miller, Obermeyer, Behan, & Benca, 1998), the most prominent hypothesis driving human studies involves disruption of circadian rhythms. Research on the role of serotonin is also active.
A circadian rhythm refers to the approximately 24-hour cycle of physiological processes present in humans and other animals. This cycle is governed via clock gene expression by the suprachiasmatic nucleus (SCN), the master pacemaker located within the anterior hypothalamus. Though the SCN endogenously generates circadian oscillations, SCN endogenously generates circadian oscillations, and they need to be entrained to the 24-hour day by external cues. Light exposure is the most important synchronizing agent of endogenous circadian rhythms.
Downstream of the SCN, a collection of systemically active neurohumoral networks transduce circadian information to the rest of the body. For instance, via projections to the hypothalamus's paraventricular nucleus, the activation of the SCN leads to autonomic changes, including cardiovascular modulation, and together the central, peripheral, and autonomic nervous systems collaborate to affect systemic changes. Thus, the SCN receives information about the external day-night cycle directly through retinofugal pathways and indirectly through neuromodulatory signaling. Circadian information is then relayed systemically through neurohumoral networks.
The current primary hypothesis for the pathophysiology of SAD, known as the “phase-shift hypothesis,” posits that there is an optimal relationship in the alignment of the sleep-wake cycle and the endogenous circadian rhythm. During the fall and winter, as day length shortens, the circadian rhythm begins to drift later concerning clock time and the sleep-wake cycle. This phase delay is hypothesized to bring about mood symptoms. A pulse of morning bright light generates a circadian phase advance, which is thought to correct the discordance between sleep and circadian phase, thereby ameliorating depressive symptoms. However, the phase-shift hypothesis would predict that the amount of phase correction required for each patient would depend on an individual’s PAD, which has not yet been proven.
Several studies have also proposed that serotonin is implicated in the pathophysiology of SAD, as selective serotonin reuptake inhibitors (SSRIs) appear to be effective in the treatment of SAD. Supporting this hypothesis, one study used Positron Emission Tomography (PET) imaging to look at binding probability at synaptic serotonin transporters in 88 normal individuals living in the temperate climate of Toronto, Canada (Praschak-Rieder, Willeit, Wilson, Houle, & Meyer, 2008). The binding probability was increased during fall and winter compared to warmer months, thus eliciting an inverse correlation between binding potential and sunlight durationsunlight duration. Of note, the largest difference in transporter binding was found in the mesencephalon, a finding consistent with animal studies demonstrating the importance of direct effects of light to the midbrain on behavior. If increased transporter activity indicated greater reuptake of serotonin during the fall/winter, and if this resulted in a lower density of cleft serotonin, then the seasonal variation in transporter activity (i.e., higher transporter efficiency in the winter) would seem to leave susceptible individuals particularly prone to mood symptoms during the darker seasons. Moreover, following BLT and during periods of remission in the summer months, the synaptic transporter activity was shown to be reduced to control levels in these patients.
BLT has also been investigated to a lesser extent in eating disorders. Because binge eating episodes have been observed to increase in fall and winter in some patients, BLT has been examined as a treatment modality for anorexia nervosa (AN) and bulimia nervosa (BN). Thus, BLT's effects on patients with eating disorders remain enigmatic. Additional studies, including larger, randomized, blinded, and controlled trials, are needed to elucidate further the role of BLT in treating this patient population. Further research might also determine whether BLT would be a useful treatment in Binge-Eating Disorder, a diagnosis new to DSM-5.
Additionally, BLT has been studied in the context of adult Attention-Deficit/Hyperactivity Disorder (ADHD), where, in addition to normal ADHD symptoms, patients often have depressed mood and difficulties falling asleep, awakening on time, and maintaining arousal (Brown & McMullen, 2001). These symptoms are indicative of a possible delay in the circadian rhythm. A case report of symptom improvement following BLT in a child with ADHD who displayed signs of delayed sleep phase also supports the idea that BLT may be useful in treating symptoms of ADHD (Gruber, Grizenko, & Joober, 2007). Whether the pathways that subserve the improvement of mood symptoms in response to BLT are the same pathways that underlie the seemingly beneficial effects of BLT in ADHD remains to be studied. While these results are promising, further studies, preferably in randomized, blinded, and controlled studies will need to be performed.
A significant immediate reduction of depression scores with light treatment can be identified after 20 minutes and reaches the maximum at 40 minutes, with no additional benefit at 60 minutes. The rate of change is steepest during the first 20 minutes of light as compared with longer intervals. Comparing the clinical impact of these durations of administration may yield different results when measured after several daily sessions. The overnight effect on circadian rhythms and sleep was not assessed in our study and is thought to impact mood regulation in SAD. Larger, prospective, controlled, and hypothesis-driven studies in more naturalistic conditions would be desirable to replicate our study results and our study results and analyze the temporal dynamic of the persistence of the immediate mood-improvement effects. Besides, in larger samples, one could define early responders and nonresponders, analyze genetic (e.g., melanopsin related genes), demographic (children, adolescents, adults, elderly, gender), physiological (e.g., pupillary responses), and clinical (e.g., abundant atypical symptoms) predictors for early response. If proven effective and efficacious, shorter exposures to bright light could become a feasible and broadly employed intervention for immediate mood improvement as an early step on the road toward full antidepressant response and remission.
