Calcium is a very important compound in our body that forms part of our bones and teeth. In fact, it is estimated that 70% of them is calcium and its absence can have serious repercussions on our organism. However, the human body is wise and knows how to alert us when something happens to it because of this, if it suffers from calcium deficiency, it is most likely that we will notice some signal. Do you want to know what some of them are? We begin!