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进入20世纪以来,在紫外线与人类健康关系的问题上一直存在着争论。早些时候,人们普遍认为日光浴有利于健康,因为阳光中的紫外线可使人体皮下所含7——脱氢胆固醇转变为维生素D3。自从杜布赖利赫博士提出皮肤癌的发生与日光照射有密切关系以来,人们对日光与健康的关系产生了困惑,接受阳光照射到底好还是不好?
Since entering the 20th century, there has been controversy over the relationship between UV and human health. Earlier, it was generally believed that sunbathing is good for health, because the sun’s ultraviolet rays can make the human skin containing 7 - dehydrocholesterol into vitamin D3. Since Dr. Dubrelich’s suggestion that the occurrence of skin cancer is closely related to sunlight exposure, people have been puzzled by the relationship between sunlight and health. Is it good or bad to receive sunlight?