How Does Red Light Therapy Work?
Red light therapy works at the level of the mitochondria. You know, those energy-producing centers of your cells.
The most researched way this happens is that red and near-infrared wavelengths (typically 600–1000 nm) penetrate tissue, and through photoreceptors in the cells, interact with an enzyme inside the mitochondria called cytochrome c oxidase. This interaction improves the efficiency of the electron transport chain, increasing production of ATP (adenosine triphosphate), which is the primary energy source of the cell.¹
When cells produce energy more efficiently, several downstream effects can occur including:
- Improved tissue repair
- Enhanced collagen production
- Reduced oxidative stress
- Healthier inflammatory signaling
- Improved circulation
Near-infrared light penetrates more deeply than visible red light, reaching muscles, joints, and connective tissue. This is why red light therapy can support both skin health and musculoskeletal recovery.
Research also suggests red and near-infrared light may:
- Increase nitric oxide availability (supporting vasodilation)²
- Modulate inflammatory pathways
- Support wound healing
- Improve cellular resilience under stress
In simple terms:
Red light therapy helps cells make energy more efficiently. And that energy is required for repair, immune balance, detoxification, and recovery.
When combined with PEMF, which supports cellular signaling and membrane potential, the effect is complementary — supporting both energy production and communication at the tissue level.
The goal is not to override the body’s natural functions, but to create better conditions for healing to occur.
Suggested References
- Hamblin MR. Mechanisms and applications of the anti-inflammatory effects of photobiomodulation. AIMS Biophysics. 2017;4(3):337–361. PMID: 28748217.
- Karu TI. Mitochondrial mechanisms of photobiomodulation in context of new data about multiple roles of ATP. Photomed Laser Surg. 2010;28(2):159–160. PMID: 20210549.