http://www.painandinjuryclinic.ca/treatments/laser.htm adverteert met:
When low level laser light waves penetrate deeply into the skin, they optimize the immune responses of our blood. This has both anti-inflammatory and immunosuppressive effects. It is a scientific fact that light transmitted to the blood in this way has positive effective throughout the whole body, supplying vital oxygen and energy to every cell. LLLT reduces healing duration 30-40% and the injured tissues are stronger than if they had not been exposed to LLLT.

Verder dan wat effect op pijn?
Zie de FDA registratie, die het nergens over het optimaliseren van "immune responses of our blood"  heeft.

Enclosure Page 3. LEP2000 Photonic Therapy System 510k Notification Supplement
K073689/S2 August 11, 2008 ATTACHMENT II Indications for Use Statement ...
http://www.accessdata.fda.gov/cdrh_docs/pdf7/K073689.pdf
The LEP2000 Photonic Therapy System is a device that emits energy in the infrared
spectrum and is indicated for adjunctive use in providing temporary relief joint pain.