As many as 60,000 people a year die from too much sun, mostly from malignant skin cancer, the World Health Organization reported on Wednesday.

　　It found that 48,000 deaths every year are caused by malignant melanomas, and 12,000 by other kinds of skin cancer. About 90 percent of such cancers are caused by ultraviolet light from the sun.

　　Radiation from the sun also causes often serious sunburn, skin aging, eye cataracts, pterygium -- a fleshy growth on the surface of the eye, cold sores and other ills, according to the report, the first to detail the global effects of sun exposure.

　　Ultraviolet light is needed to activate production of vitamin D in the body, which prevents rickets, osteomalacia and osteoporosis. It may also affect some cancers and immune disorders.
 
　　世界卫生组织7月26日公布说，全球每年因太阳照射过多而死亡的人数有6万人之多，其中的绝大部分人都是因为罹患恶性皮肤癌而丧生的。
 
　　世界卫生组织指出，每年全球有4.8万人因患恶性黑素瘤而丧生，另有1.2万人因患其他类型的皮肤癌而失去生命。而90％的这种癌症是由于长时间暴露在太阳紫外线下造成的。
 
　　世界卫生组织发表报告称，太阳光照射过度不仅会增加人们患癌的危险，同时也会造成严重晒伤、皮肤老化、白内障、翼状胬肉（从眼睛内角的结膜生出一块不正常的块状组织）以及唇疱疹等其他一些不良后果。这份报告首次详细探究了全球范围内太阳照射对人体健康的影响。

　　在人体内部，紫外线被用来刺激维生素D的生成，这种维生素能预防驼背、骨软化和骨质疏松症等骨骼问题。另外，它对某些癌症和免疫系统的疾病也有影响。
 
    摘自 国际在线：张芸 
 

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