There's an interesting theory about mitochondria and melatonin secretion caused by near-infrared light that may be causing the different health outcomes, which

There's an interesting theory about mitochondria and melatonin secretion caused by near-infrared light that may be causing the different health outcomes, which historically are correlated very strongly to Vitamin D serum levels (where causation has yet to be shown). Here's a link for a presentation and a proposed mechanism of action around near-IR light by one of the best sources of medical science info on the internet: https://youtu.be/5YV_iKnzDRg https://youtu.be/5YV_iKnzDRg