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Low Level Light Therapy
sponsored by
American Society for Photobiology
Low Level Light Therapy is the application of very low power red or near infrared light for wound healing or other therapeutic purposes.
Ask the Experts
Q: What is special about a red laser or LED? Why can't sunlight do the same things?
A: Sunlight contains ultraviolet-B and ultraviolet-A radiation, visible light, and infrared radiation. Different wavelengths can have a different biological effects; some effects are positive and some effects are negative. Red light can penetrate deep into tissues (the longer the wavelength, the deeper the penetration) and specifically targets a light-absorbing chromophore in the mitochondria.
- Dr. Joan Roberts, Professor of Chemistry and Chair, Department of Natural Sciences, Fordham University
We welcome your questions and comments! Please direct these to the LLLT webmaster: Dr Linda Jones.