Calcium is important for everyone, not just children, since we need calcium for our teeth, bones and the function of our organs like the heart, kidneys, muscles and nerves. If we lack calcium in our diet, we are at increased risk for osteoporosis (thinning bones) which means we will get fractures very easily. It can also lead to curves of the spine and a shortening of your height. Since calcium is readily available to us by either diet or supplements it is a wise course of action to try to get adequate calcium daily. Foods like dairy products and veggies like broccoli and kale are calcium rich. For more information visit this website.