Dr. Anna Lembke, MD., Assistant Professor of Psychiatry and Behavioral Sciences (General Psychiatry and Psychology-Adult ) at Stanford University Medical Center . Photo taken on Wednesday, April 27, 2016. ( Norbert von der Groeben )
Photobiomodulation, the use of light waves to change human biology, has boomed in recent years for all kinds of purposes, at medical clinics and at home. We wanted to know what the science says — and doesn’t say.