Bone density in pregnant women shows a decrease in bone mass considering that it is likely to be caused by a calcium deficiency. A bone density test in a pregnant woman shows a decrease in bone mass, which is likely to be caused by a calcium deficiency. Insufficient intake of calcium during pregnancy is likely to lead to calcium deficiency. When a pregnant woman suffers from calcium deficiency, it is very likely to lead to symptoms such as foot cramps and numbness in the hands. It is recommended that pregnant women should pay attention to more supplemental nutrition during pregnancy, and eat more food with high calcium content, such as eggs, milk, shrimp and other seafood. Normally, you should also pay attention to appropriate sun exposure, in order to promote the absorption of calcium. During pregnancy, you should pay attention to regular obstetric examination, especially pay attention to do a good job in the examination of malformations, find problems at any time at any time to deal with, if at any time during pregnancy there is abdominal pain or abnormal vaginal bleeding and so on, you must seek medical treatment at the earliest possible time.