Effect of Transcutaneous Radial Artery Photobiomodulation on Continuous Measures of Interstitial Glucose in a Single Subject: A Brief Report.

Intravenous blood irradiation with light is purported to reduce blood sugar levels in people with diabetes mellitus (DM). Transcutaneous light emitting devices are marketed for use in modulating glucose levels, yet evidence of effectiveness is scarce. In a single subject (nondiabetic woman with significant family history of DM), transcutaneous photobiomodulation (PBM) at various wavelengths was applied to the radial artery immediately after a standardized meal, or at the peak glucose after the standardized meal.