Does Red Light Therapy Work?

6. Mechanism of Action

Studies into the efficacy of red light therapy have been going on for about 50 years, though the treatment is still not widely accepted by the scientific and medical communities. This unacceptance is largely due to a lack of understanding about how or why the therapy works. One theory is that light causes an increase in electron transport, which stimulates cellular mitochondria. Another is that the light activates ion channels that allow calcium to enter the cells.