African woman doctor checking on a pregnant patient
African woman doctor examining a pregnant patient / photo by: Belen B Massieu // https://stock.adobe.com/contributor/209464985/belen-b-massieu?load_type=author&prev_url=detail
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.