据来自日本学者研究的结果表明,老年人容易缺锌,特别是活动量小、体力活动减少或久病卧床的老年人更易缺锌。在体内锌是仅次于铁的含量较多的矿物质,是大约300多种酶的金属成分,与蛋白质、核酸代谢关系密切。如果血清锌浓度低于66 mg/dL,就会引起低锌血症,其主要表现有食欲不振、味觉和 According to the results of studies conducted by Japanese scholars, older people are more likely to lose zinc, especially those who are bedridden with low activity, reduced physical activity, or chronic illness. Zinc in the body is second only to the iron content of more minerals, is about 300 kinds of enzyme metal composition, and protein, nucleic acid metabolism are closely related. If the serum zinc concentration is lower than 66 mg / dL, it can cause hyponatremia, its main manifestations are loss of appetite, taste and