化学元素与人体健康

人体内有６０多种必需元素、有益元素和有害元素，它们在人体内具有材料、运载、催化、调节和信使功能。磷被认为是生命中心元素，人体内含量为４００－８００ｇ；１１种常量元素占人体总重的９５％，而微量元素仅占０．０５％。化学元素对人体的作用与必需元素量的平衡有关，与其在人体内的浓度和存在形式及价态有关，还与各微量化学元素间的平衡，即生物体内微量元素之间的作用有关。

Chemical Elements and Human Health

Over 60 necessary elements, beneficiary and harmful elements are contained in human body. They perform as meaterials, Transport vehicles, catalysts, regulators and envoys. Phosphate is regarded as a key element to human life and 400-800g of it is contained in human body. Eleven normal elements account for 95 95% while microelements account for 0 05%. effect of chemical elements on human body correlates with the balance of necessary elements,its density in human body, its esisting form and the balance of microelements. The necessary microelements can be obtained in foods of various kinds. The protection of environment and the treatment of pollution may prevent the over-taking of harmful elements.