Why do Bones regenerate faster in children than they do in adults?

Answer 1

While the body is still growing, it is literally programmed to make bone mass efficiently and quickly. Once an adult reaches full height, the "bone making" machinery shuts down.

Answer 2

Kids are breaking their bones in unprecedented numbers. From the early 1970’s to the early 2000’s, broken forearms in children have increased by a striking 40 percent, according to data published in the September 17, 2003 Journal of the American Medical Association. The change is most dramatic in girls (up 56 percent), but is significant in boys (up 32 percent). In girls, the peak age for these fractures is 8 to 11; in boys, it is 11 to 14. The timing may relate to their growth spurts, with increased calcium needs and perhaps changes in their activities and coordination. The data give us clear information on what is happening, but my question is, why? Why do you think broken bones are more common now than they were before? Are bones weaker today because of inadequate calcium? Because of decreased exercise to strengthen the bones? Alternatively, are healthy bones subjected to stronger forces today from increased activity? Or from a higher rate of skateboarding, rollerblading, and scootering? The remarkable trend in broken bones deserves good research to sort out its causes.
To understand this it would be helpful to know something abou the growth of bones.A idea of a broken bone makes us nervous. But breaking down is part of the growith process of bones.If nobody breks them the bones themselves constantly break themselves to maintain themselves for rebuilding the collagen and minerals that they are made of.
There are multinucleated cells called osteoclasts which eat away the bone’s mineral coating and collagen. You can think of them as “bone destroyers.Compensating for this are Cells called osteoblasts that lay new collagen and coat the bone with fresh minerals. You can think of them as “bone creators.Osteoclasts break down the “old” collagen and minerals that make up healthy bones. Then the osteoblasts follow and lay down fresh collagen and minerals. The process is never ending. As a result of this constant breakdown and replacement, human bones are never more than 20 years old.
Although bones are very strong, they do sometimes break. When this happens the injury is flooded with natural painkillers called endorphins, which temporarily block out pain. An injury will swell because the body is sending extra oxygen and nutrients to the injury to begin the healing process. A large collection of blood called hematoma, surrounds the break in the bone. Stem cells, which are responsible for making new cells, usually divide every one to two days. Now that there is an injury, they will divide every three minutes. Within four weeks the hematoma will harden around the break, making the injured area extra strong.
Over the next several months, osteoclasts will “eat away” the hardened hematoma and the injury will be repaired.Within a year of the injury, the bone will be almost as strong as it was before the break.

While this process is going on continuously in the body throughout life it is much more acclerated among children for, as they say in slang 'They have fresh blood'.

Answer 3

Cells in bones are more healthier than adult.

Answer 4

Because they are still growing