Using weight and the force of gravity to cause your bone to support you stimulates the production of new bone cell and keeps your bone strength healthy. (naturalchoiceswellness.com)
For example, stem cells could be extracted, turned into new bone cells, and then injected into weak or broken bones. (sciencenewsforstudents.org)
Normally, bones go through a process whereby old bone is replaced with new bone cells, but the body's ability to handle this process changes with age. (34-menopause-symptoms.com)