中国营养学家宣称,人体中已发现的必需无机元素有20多种之多,占人体总重量的4～5％,主要作用是构成人体骨、齿,是血液和多种酶的组成部分,还可调节生理机能。 在这些元素中,含量大于5克的有7种,它们是钙、磷、镁、钾、钠、氯和硫。专家认为人体每日应从膳食中摄取100mg以上,故而该7种 Chinese nutritionists claim that more than 20 kinds of essential inorganic elements have been found in the human body, accounting for 4 to 5% of the total human body weight. The main role is to form the human body bone and teeth, which are components of blood and various enzymes. Can also adjust the physiological function. Of these elements, seven are present in more than 5 grams and are calcium, phosphorus, magnesium, potassium, sodium, chlorine and sulfur. Experts believe that the human body daily intake of 100mg from the diet, so the 7 species