钙的主要功用是组成骨骼和牙齿,也对肌肉收缩、血液凝固、神经调节等起重要作用。一旦钙缺乏,对儿童来说易引起低钙惊厥、发育迟缓、佝偻病等,对孕妇来说易引起软骨病,对青少年来说易感到疲乏无力,而对中老年来说则主要是引起骨质疏松,严重者可导致负重骨折。因此,人的一生都需 The main function of calcium is the formation of bones and teeth, but also plays an important role in muscle contraction, blood coagulation, neuromodulation and so on. Once the lack of calcium, children can easily cause hypocalciuric seizures, stunting, rickets and so on, is easy for pregnant women cause cartilage disease, teens tend to feel tired and weak, while in the elderly is mainly caused by the bone Loose, severe cases can lead to weight-bearing fractures. Therefore, people need all one’s life