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镁(Mg)是人体的重要组分。成人每公斤体重(除去脂肪组织)约含20mM镁,体重70公斤的人,去除20％脂肪,约含1200mM,相当于20～28g。人体50％的镁存在于骨组织,而其中又有30％属于一个可交换的“镁池”。镁的这种分布比值在成人变化极慢,这点不同于儿童,一般每天摄入的镁只有30％被吸收(机体缺镁时,可达50％)。人体45％的镁存在于细胞内,所以认为镁是微量元素是完全错误的。镁是细胞内含量居第二位的阳离子,它不仅关系到酶系统的激活、神经肌肉的传递以及肌肉兴奋,而且对于保持线粒体完整性、氧化磷酸化的进行、蛋白质生
Magnesium (Mg) is an important component of the body. Adult Per kg body weight (excluding adipose tissue) about 20mM magnesium, weighing 70 kg, 20% fat, about 1200mM, equivalent to 20 ~ 28g. Fifty percent of the body’s magnesium is found in bone tissue, and another 30% of them belong to an exchangeable “magnesium pool.” This distribution ratio of magnesium varies very slowly in adults, unlike children, which are absorbed by only about 30% of daily intake of magnesium (up to 50% of body magnesium deficiency). 45% of human magnesium is present in cells, so it is completely wrong to think that magnesium is a trace element. Magnesium is the cation with the second highest intracellular content. It is not only related to the activation of the enzyme system, neuromuscular transmission and muscle excitability, but also to the maintenance of mitochondrial integrity, oxidative phosphorylation,