During the teen years bones grow faster than at any other developmental point. It is during these stages that getting a calcium rich diet is the most important. That is not to say that calcium does not need to be part of a healthy diet at other ages, but it is most important at this time. Developing strong and healthy bones will help bones stay strong and healthy as your body ages. When you create a strong foundation in childhood you are setting yourself up for fewer issues as time goes on.