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镁以血清镁作为营养状态的指标,但其敏感性差。据美国调查,老龄妇女血清镁稍高,18～24岁妇女血清镁是1.64mEg/L,65～74岁妇女是1.70mEg/L,镁的摄入量每天不应少于350mg。锌锌的营养状态指标采用的是血清或毛发的含量。据美国大规模调查,血清锌是50～80μg/dl,每克发锌含量在100μg以下。日本女大学生每天锌的摄入量是18.4mg,轻度劳动的成年人是15mg,老年人锌的摄入量与之相同。铜美国人血清铜含量低于80μg/ml,铜
Magnesium to serum magnesium as an indicator of nutritional status, but its sensitivity is poor. According to the United States survey, the serum magnesium of elderly women is slightly higher, serum magnesium of 18-24 years old women is 1.64mEg / L, women of 65-74 years old is 1.70mEg / L, magnesium intake should not be less than 350mg daily. Zinc and zinc nutritional status indicators used in serum or hair content. According to the United States large-scale survey, serum zinc is 50 ~ 80μg / dl, zinc content per gram in less than 100μg. Japanese female university students daily intake of zinc is 18.4mg, mild working adults is 15mg, zinc intake in the elderly with the same. Copper American serum copper content below 80μg / ml, copper