The problem of calcium deficiency is actually common, there are many people who feel that their bodies are fine, but as soon as they do a physical examination there is a calcium deficiency problem. Calcium deficiency is very harmful, especially when long-term calcium deficiency, the consequences are very serious. The danger of calcium deficiency 1, calcium deficiency may cause children night cry If a child has a calcium deficiency problem, at night may lead to sleep is affected, the situation of night cry. For small infants within one year of age, it is generally recommended to eat breast milk, and in the absence of breast milk to eat milk, with suitable supplements to supplement sufficient calcium. Otherwise, there may also be rickets and chondromalacia and other conditions. 2, calcium deficiency may cause adolescent stunting Adolescents are in a period of development, the demand for calcium is relatively high, in this period must pay attention to calcium supplementation, otherwise it may lead to stunting. Whether it is bones or teeth, vision, all need calcium to maintain normal function. And adolescents who are deficient in calcium will also have poor attention span and poor memory. 3, calcium deficiency may cause adults immunity decline calcium deficiency may also lead to a decline in immunity, because our body needs a lot of nutrients every day to maintain normal operation, if the lack of any one of them will have a negative impact on the body’s immunity. Especially as we get older, calcium deficiency can induce various serious diseases. 4, calcium deficiency can easily lead to various diseases The body function of middle-aged and elderly people is already in the “downhill”, at this time, if calcium deficiency may cause back pain, osteoporosis, osteomalacia, and even cause respiratory system, blood system, cardiovascular system, nervous system, immune system problems, and also induce endocrine system, urinary system, digestive system problems. Older people over 65 years old, who have poor balance and are prone to fall, are at risk of fracture if they lack calcium.