Calcium is a metal element that is found more than any other in our body and which is very important for bones, heart, muscle and brain function. It works both with phosphorus to build healthy bones and teeth, and with magnesium for proper cardiovascular function. Almost 95% of the calcium in our body is found in our bones and teeth, where it is stored (about 1000 grams) in the form of small crystals, which contribute to the harder texture of the bones and provide the body with calcium when needed. Our body's calcium requirements are high in childhood and adolescence, when our skeleton is built, but also in pregnancy and lactation, when the fetus 'pulls' calcium from its mother to build its own skeleton. . Finally, it is necessary after menopause but also in old age, where its lack becomes more obvious.