Effects of Red and Infrared Light Therapy on Health, Prevention, and Longevity
In this article we explore the differences between red and infrared light therapy and why they have a positive impact on our health, prevention, and “healthy aging,” contributing to longevity.
What is Red and Infrared Light Therapy?
Let’s begin with a brief introduction to the physical properties of light and the electromagnetic spectrum, which encompasses all possible frequencies of electromagnetic radiation.
Electromagnetic waves in the visible spectrum (what we can see) have wavelengths between 380 nm (violet) and 760 nm (red). Waves with longer wavelengths are classified as infrared, microwaves and radio waves, while shorter wavelengths are classified as ultraviolet, X-rays and gamma rays.
Red light is located at the "end" of the visible spectrum, with wavelengths between 630 nm and 760 nm.
Infrared rays, on the other hand, are part of the spectrum of light generated by the sun. They are invisible to the human eye and are perceived only as heat radiation.
Depending on their wavelength and mode of action, infrared rays are divided into:
- Infrared A: Shortwave radiation (780–1400 nm or 0.8–1.4 µm)
- Infrared B: Medium-wave radiation (1400–3000 nm or 1.4–3 µm)
- Infrared C: Longwave radiation (3000–10000 nm or 3–10 µm)
It has been observed that electromagnetic radiation ranging from 600 nm to 1200 nm can interact with numerous biological effects. This mechanism is known as
Photobiomodulation (PBM).
Red light, between 600 nm and 700 nm, and infrared light, between 800 nm and 1200 nm, are used therapeutically because they impact biological and cellular processes in living beings and humans.
At the cellular level, this effect is attributed to the absorption of visible monochromatic and near-infrared radiation by components of the mitochondrial respiratory chain. This leads to increased ATP synthesis, RNA and protein production, and enhanced oxygen consumption, membrane potential, NADH synthesis, and ATP production.
To summarize, the stimulation of mitochondria in cells helps improve their function, increases ATP production, and promotes cell regeneration. This aids in the repair of damaged tissues, accelerates wound and muscle injury healing and reduces inflammation.
Infrared light, with its longer wavelength, can penetrate deeper into tissues (5–6 cm) and reach muscles, tendons, nerves, and bones. Red light, on the other side, remains more superficial, making it useful for treating skin conditions.
Commercially available devices such as LED, red light therapy and infrared light therapy utilize various wavelength combinations suitable for photobiomodulation.
This technology was initially developed by NASA to promote wound healing in astronauts. Today, it is widely used in many medical fields, including pain medicine, neurology, dermatology and dentistry.
Health and Cellular Regeneration
One of the main benefits of red and infrared light therapy is its ability to promote cellular regeneration.
Once the cellular mechanisms are activated, it takes several days for photobiomodulation to reach its maximum efficiency, making it helpful to space the sessions till approximately 72 hours apart.
This type of therapy is thus useful for patients with pain, arthritis, inflammatory diseases and oral mucositis. It is also beneficial for athletes and for recovery after physical activity.
Additionally, red light therapy has been shown to improve skin health. The treatment can reduce inflammation, stimulate collagen production and improve skin elasticity. These effects are particularly visible in the treatment of wrinkles, scars, acne and even hair regrowth.
Prevention and Reduction of Oxidative Stress
Red and infrared light therapy has the ability to reduce oxidative stress, known as one of the primary causes of premature aging and chronic diseases.
This therapy reduces free radicals, protecting cells and tissues from oxidative stress and thus promoting long-term health.
Longevity and Quality of Life
Red and infrared light therapy may support cellular lifespan by improving mitochondrial activity, cellular respiration and reducing cellular damage and oxidative stress.
While further scientific exploration is necessary, the regular use of red and infrared light devices may contribute to slowing the cellular aging process and improving health.
Enhancing General Well-being
Besides the direct physical effects on the body, red and infrared light therapy has also shown positive effects on mood and sleep quality. The stimulation of ATP production not only improves cellular function but can also increase general energy levels, reduce symptoms of fatigue and enhance psychological well-being. These effects, combined with better sleep quality, contribute to improved stress management and greater resilience.
Conclusions
Red and infrared light therapy is a safe, non-invasive technology that offers numerous benefits for health, prevention and longevity.
This type of therapy can be used alone or integrated with other medical and holistic practices. Integrating this therapy with other practices can provide a more comprehensive approach to physical and mental well-being. When used regularly, red and infrared light therapy can be a valuable tool for enhancing quality of life and promoting health and well-being.
In our integrative medical and laser practice, we have several red and infrared light devices:
- The Novothor red and infrared light bed for a full-body treatment
- The LED and laser devices from THOR for targeted therapy
- The Nd:YAG laser with a wavelength of 1064 nm for treatments in deeper body areas.
Additionally, we offer red and infrared light devices that patients can use safely at home.