Cramps in the lower limbs, restless leg syndrome and sleeplessness are all eased by the addition of calcium and magnesium to the diet. Magnesium is more easily absorbed by the body in the form of dolomite, or with the addition of calcium. People who are too busy to eat properly, nursing or pregnant mothers and children who refuse milk and are picky eaters should all take calcium supplements. Children need lots of calcium to build strong bones and teeth that will serve them faithfully for the rest of their lives.