The amount of ultraviolet radiation that may reach a given part of the earth's surface at any time is determined by a great variety of factors, including latitude, season, time of day, altitude, local atmospheric conditions (smog, cloudiness, haze, smoke, dust, fog, altitude and aerosol particles), variation in the thickness of the ozone layer and the angle of the sun above the horizon. Ultraviolet radiation may damage the skin and the eyes and influence the immune system (Table 5). The effects of ultraviolet radiation on the skin can be acute or chronic. The acute effects are erythema and sunburn, and the chronic effects can be freckles, solar lentigines, melanocytic nevi, solar keratosis, photo-aging and cancer (145). We report here only skin cancer and the effects on the eyes and immune system.
Was this article helpful?
All Natural Immune Boosters Proven To Fight Infection, Disease And More. Discover A Natural, Safe Effective Way To Boost Your Immune System Using Ingredients From Your Kitchen Cupboard. The only common sense, no holds barred guide to hit the market today no gimmicks, no pills, just old fashioned common sense remedies to cure colds, influenza, viral infections and more.