DOES UV LIGHT SUPPRESS THE IMMUNE SYSTEM?
The effects of UV on the immune system have been the subject of controversial debate. While physical therapists have reported a distinct activation of the immune system, dermatologists have noted a depression of the system from UV rays. Both are correct. Ultraviolet radiation has a suppressive effect and, at the same time, an activating effect. Because of this two-rein principle (up and down regulation), light controls our energetic and aggressive immune system just as a rider controls an unruly horse. One should speak, therefore, of a modulating effect from UV radiation. For example, UV light is utilized in aiding successful organ transplantation.
