Okay, but then what causes depression? It seems more likely that a range of environmental, lifestyle, and genetic factors cause both depression and mitochondrial damage.
mitochondria need infrared to make melatonin(remove free radicals from combustion)
Without infrared (living inside) we are in constant inflammation, especially the mitochondria
The research is solid, but it’s mostly ignored.
Narrowband and low-energy lights (fluorescent and LED), not so much.