Light therapy has been shown to Increase vascularity (circulation) by increasing the formation of new capillaries, which are additional blood vessels that replace damaged ones. New capillaries speed up the healing process by supplying additional oxygen and nutrients needed for healing.
Stimulate the production of collagen. Collagen is the most common protein found in the body. Collagen is the essential protein used to repair and replace damaged tissue. It is the substance that holds cells together with a high degree of elasticity. Increasing collagen production will decrease scar tissue at the injured site.
Stimulate the release of adenosine triphosphate (ATP). ATP is the major carrier of energy to all cells. Increases in ATP allow cells to readily accept nutrients and expel waste products faster by increasing the energy level in the cell. All food turns into ATP before it is utilized by the cells. ATP provides the chemical energy that drives the chemical reaction of the cell.
Increase lymphatic system activity. Edema, which is the swelling or natural splinting process of the body, has two basic components. The first is a liquid part which can be evacuated by the blood system and the second is comprised of the proteins which have to be evacuated by the lymphatic system. Research has shown that the lymph vessel diameter and the flow of the lymph system can be doubled with the use of light therapy. The venous diameter and the arterial diameters can also be increased. This means that both parts of edema (liquid and protein) can be evacuated at a much faster rate to relieve swelling.
Increase RNA and DNA synthesis. This helps damaged cells to be replaced more promptly.
Reduce the excitability of nerve tissue. The photons of light energy enter the body as negative ions. This requires the body to send positive ions, calcium among others, to flow to the area being treated. These ions assist in regulating the nerves, thereby relieving pain.
Stimulate fibroblastic activity which aids in the repair process. Fibroblasts are present in connective tissue and are capable of forming collagen fibers.
Increase phagocytosis, which is the process of scavenging for and ingesting dead or degenerated cells by the phagocyte cells. This is an important part of the infection control process. The healing process depends upon the Destruction of infection and cellular clean up.
Induce a thermal like effect in the tissue. The light raises the temperature of the cells although there is no heat produced from the diodes themselves.
Stimulate tissue granulation and connective tissue projections, which are part of the healing process of wounds, ulcers or inflamed tissue. Stimulate acetylcholine release. Acetylcholine causes cardiac inhibition, vasodilation, gastrointestinal peristalsis and other parasympathetic effects.