Calcium is an essential nutrient and is associated with the acid/base system, bone and tooth formation, function of the muscles, heart, skin, blood and nerves. Up to 99% of the calcium in the body is found in the hard tissues (tooth and bone). The remainder is distributed widely throughout the soft tissues and organs, performing a variety of important functions. It is essential in blood clotting and in nerve transmission and in the passage of nutrients through cell walls. Poor bone and tooth formation, slow blood clotting, excessive and painful menstruation, osteoporosis, nervousness, irritability, insomnia and heart palpitations are indications of calcium deficiency.
