yes this is scientific prooven, that UV-Exposion affects your immune system
i can really feel the impact
sometimes get temporary light snuffing etc. which only lasts for some minutes/hours
# DO make sure you get enough vitamin D3 and beta-carotene, if necessary through supplementation. Recent research has shown that taking 30 mg of beta-carotene a day protects against the suppression of the immune system by UVA rays(13).
# DO make sure to supplement your diet with antioxidants. Dr. Abram Hoffer in Victoria, Canada recommends that vitamin C, vitamin E, and selenium be used as a protection against the damages of excessive ultraviolet radiation. He suggests daily dosages of 3 grams or more of vitamin C, 800 IU of vitamin E, and 200 micrograms of selenium (l-selenomethionine)(22). Vitamins C and E also protect against cataract formation(23,24).
Its interesting that Vitamin C+E also prevents cataract (blurred view) development, so that should come handy for all users who experienced that side effect i think.
Gonna try out those dosages.
Source:
http://vvv.com/healthnews/dsunscre.html