1. What is calcium? Calcium is one of the important minerals necessary for the human body. It is mainly found in bones and teeth. Calcium not only maintains the health of bones and teeth, but also participates in various physiological processes in the body, such as nerve conduction, muscle contraction, blood coagulation, etc. Therefore, calcium supplementation for babies is crucial for the healthy development of the body. 2. The importance of calcium supplementation for babies 1. Bone and tooth development During growth and development, babies need a large amount of calcium to support the development of their bones and teeth. if lacking