In too many scientific and medical fields, for a lot of researchers the truth is defined only in relationship to the next grant, peer pressure and the fight to further an entrenched view. Such a flow of funded research almost exclusively in one direction is characteristic of potentially dangerous science fads. And many physicians give their patients the same warning. This is terrible advice. If man were a machine, doctor could repair or replace one part without worrying about the rest of the contraption.
Man is no machine, but more like a web or hologram.
Every organ and every part affects, and in fact cells in every part communicate with, all the other parts. People who engage in these practices are ruining their disposition and health. The phobia arose after investigators anesthetized animals, propped their eyes open and shined intense UV light into them. Their retinas were damaged. In fact, the trace amounts of UV radiation in natural daylight are required for physical and mental health, civilized behavior, muscle strength, energy and learning.