钙是保证人体健康及正常发育不可缺少的元素,成年人体内钙的总储存量约为1200克左右,其中99%储存在骨骼内,1%储存在血液、神经、肌肉等组织中,人体内要有足够的钙,才能维持正常的新陈代谢,使神经与肌肉功能健全。所以,中老年人要特别注意平时的饮食、运动、睡眠以及休息。人体缺钙的现象并非罕见。据近年我国膳食营养调查资料表明, Calcium is an indispensable element to ensure human health and normal development. The total amount of calcium stored in adults is about 1200 grams, of which 99% is stored in bone, 1% is stored in tissues such as blood, nerves and muscles, and the human body To have enough calcium to maintain normal metabolism, so that nerves and muscles function well. Therefore, the elderly should pay special attention to the usual diet, exercise, sleep and rest. The phenomenon of calcium deficiency in the body is not uncommon. According to the survey data of dietary nutrition in China in recent years,