Like plants that absorb light for photosynthesis, animal and human cells also respond to the energy from absorbed light. Photobiomodulation is the science of applying light waves to cause a biologic effect.
670nm and 830nm LIGHT ENERGY penetrates tissues and stimulates Cell mitochondria TO WORK MORE EFFICIENTLY. 1
Two factors are key to photobiomodulation:
- A wavelength of energy that can be most easily absorbed, which for human cells is either 670nm or 830nm, the far red, nearly infrared end of the spectrum. Light at either of these wavelengths can sufficiently penetrate tissue. Whiter light is reflected or cannot penetrate the skin nearly as deep.
- Cells’ ability to absorb and use light energy to facilitate their metabolic functions.
Most cells are ultimately regulated by mitochondria, which are responsible for:
- generating the energy needed to keep the cell alive and functioning properly,
- cell differentiation,
- signaling (cell communication),
- and cell growth and mitosis, or creating new cells.
When mitochondria are functioning at their best, they are producing enough energy for a cell to divide and regenerate and communicate with other cells. Producing the energy required is a multi-step process and the crucial link in the chain is the enzyme cytochrome c oxidase.
Cytochrome c oxidase is the most researched and reported on absorber of near infrared light energy. By providing a consistent, strong dose of far-red, near infrared light (at 670nm or 830nm wavelengths), one can stimulate this enzyme and as many as 30 other photoacceptors in mitochondria.1
In research, many possible benefits of light therapy have been studied and reported, including:
- Increased vascularity (relating to fluid-carrying vessels)
- Stimulated collagen production (a protein found in skin, bone and other connective tissues)
- Increased adenosine triphosphate (ATP) release (the fuel for cells)
- Increased RNA and DNA synthesis (essential for protein synthesis and ATP production and cell repair)
- Increased lymphatic drainage (a fluid containing white blood cells that is drained from tissue spaces in the course of healing, it often carries away bacteria, viruses and cancer cells)
- Stimulated fibroblastic activity (connective tissue that secrets collagen and elastic fibers)
- Increased phagocytosis (a process of cleaning the blood stream and tissues of bacteria, waste and other foreign particles).
1 "Photon Therapy in Retinal Injury and Regenerative Disease," Janis T Eells, Ph.D.
Learn more about cellular function
This website is intended for healthcare professionals and clinical researchers only. All of the treatments using LED phototherapy devices that are discussed on this website are in various stages of investigation and have not been approved by the FDA except where specifically stated.