Blue light treatment reduces spontaneous and evoked pain in a human experimental pain model pain in multiple conditions.

Researchers at the University of Erlangen–Nuremberg compared the effects of blue light, red light, and heat treatment on pain that was induced in 30 healthy volunteers. The study showed the superiority of blue light for pain relief in three different measurement categories of quantitative sensory testing.

“From all treatments, only Blue Light reduced NRS pain scores significantly,” the researchers wrote in their results.

Source: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8660004/

Thanks to Dr. Ana Mihalcea of AM Medical LLC for finding this article