Light therapy can:

1. Increase vascularity by increasing the formation of new capillaries with additional ones that replace the damaged ones. New blood vessels speed up the healing process by carrying more oxygen and nutrients and moving the waste products.
   
   
2. Stimulate the production of collagen, a common protein found in the body used to repair damaged tissue and replace old tissue.
   
   
3. Stimulate the release of ATP which is the major carrier of energy to all the cells.
   
   
4. Increase lymphatic system activity to reduce edema at a faster rate than normal.
   
   
5. Increase RNA and DNA synthesis to help damaged tissue cells to be replace more promptly.
   
   
6. Reduce excitability of nervous tissue (pain relief).
   
   
7. Stimulate fibroblastic activities which aids in the repair process.
   
   
8. Increase phagocytosis activities which is the process of eliminating dead or degenerated cell structures due to tissue injury or chronic degeneration.
   
   
9. Increase a thermal like effect in the tissue, raising the temperature of the cells which aids in the healing process.