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Are bones actually living organs?

Dr. Michael Roizen, MD
Internal Medicine
Your bones aren't just dead pieces of scaffolding. They're living organs. They continually replenish themselves and regenerate to build new bone in place of old bone and when it's damaged-making it one of the few organs in the body able to do that. In fact, it's the only material in your body that regenerates brand new.

Think of it: when you cut your skin, you don't grow new skin; you heal with a scar, which isn't really new because it doesn't grow hair or secrete sweat. Bone is the opposite-it heals itself, and the new, repaired bone is often stronger than the original.

The only downside-as anyone who's ever had to wear a cast knows-is that it can take four to six months to heal completely. While that process is going on, other parts of your system-like the muscles around those bones-can weaken.
YOU: The Owner's Manual, Updated and Expanded Edition: An Insider's Guide to the Body that Will Make You Healthier and Younger

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.