据目前掌握的北方几个城市卫生统计表明,婴幼儿的佝偻病发病率都在50%以上。(北京53.8%、石家庄64.3%,沈阳77.6%[工业区]和44.3%[居民区]、肇州55.3%)。这种因缺钙引起的疾病还会引发其它小儿疾病,如肺炎等呼吸系统病和癫痫等。老年人也大都因缺钙而引起骨质疏松。造成缺钙的原 According to the statistics of several cities in the north nowadays, the incidence of rickets in infants and young children is above 50%. (53.8% in Beijing, 64.3% in Shijiazhuang, 77.6% in Shenyang [Industrial Zone] and 44.3% in [Neighborhood] and 55.3% in Zhaozhou). This disease caused by calcium deficiency can also lead to other pediatric diseases, such as pneumonia and other respiratory diseases and epilepsy. Elderly people are mostly due to calcium deficiency caused by osteoporosis. Cause the original calcium deficiency