Jordan Ackernecht, 21, had a heart transplant on March 20, 2020 at Stanford Health Care during the COVID-19 pandemic and her family was unable to be by her bedside as she recovered. Photo by Heather Armstrong
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.