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微量元素具有一定的生理功能，是生命活动所必需的，当某元素摄入不足时，会导致机体功能受损，影响机体正常代谢和生长发育。但若某元素摄入过多，超出需要量的话，它又具有潜在的毒性，损害人体器官组织，并会引起生理功能的紊乱，加速衰老过程，影响人体健康，所以通过适当
Trace elements have certain physiological functions, is necessary for life activities, when a certain element intake, will lead to impaired body function, affecting the body’s normal metabolism and growth and development. However, if an element is overexpanded and exceeds the required amount, it may have potential toxicity to human organ tissues, cause physiological disorder, accelerate the aging process and affect human health. Therefore,