Benefits of Light Therapy and why it works
The use of low levels of visible or near-infrared (NIR) light for reducing pain, inflammation, and edema; for promoting healing of wounds, deeper tissues, and nerves; and for preventing tissue damage has been known for many years. Originally this was thought to be isolated to only laser light (soft or cold lasers). Today and for several years now that has broadened to include photobiomodulation and photobiostimulation using non-coherent light (LEDs).
The Mitochondria are thought to be the likely site for the initial effects of light, which leads to increased ATP production, modulation of reactive oxygen species, and induction of transcription factors. These effects in turn lead to increased cell proliferation and migration (particularly by fibroblasts), modulation in levels of cytokines, growth factors and inflammatory mediators, and increased tissue oxygenation.
The results of the biochemical and cellular changes in animals and people when using LLLT therapy include such benefits as increased healing of chronic wounds, improvements in sports injuries and carpal tunnel syndrome, pain reduction in arthritis and neuropathies, and amelioration of damage after heart attacks, stroke, nerve injury, retinal toxicity, and much more.