Bones are dynamic! Even though they are hard, bones are living and continually changing parts of your body that have cells working on them that are designed specifically to either make new bone or break it down. While it may sound strange that our body would want to break down our own bones, it’s a really important process for keeping the whole entire body healthy! There are a couple of reasons for this, and one is that minerals such as calcium are stored in your bones. Of course, you’ve probably heard this a lot, and heard that calcium is really important for healthy bones. What you may not have heard is that calcium is critically important for many functions taking place in the body, including nervous system activity and muscle contractions, and when your body needs calcium for all of these important things, it is going to have to get it from somewhere. That somewhere is your bones.
“Developing peak bone mass (the most bone mineral possible) in the teenage years through the 30s is the cornerstone of optimal bone health,” says Dr. Dorothy Fink, an endocrinologist and internist at Hospital for Special Surgery in New York City, where she often treats dancers. “There are cells in the body that build bone (osteoblasts) and cells that break it down (osteoclasts). These cells work together every day to keep your bones in the best shape possible.”