Chiropractic: Bone Demineralization.

With lack of proper motion (joint immobilization), vertebral bone density will decrease if the vertebrae do not bear normal weight (think of osteoporosis). On the other hand, bone density will increase when coupled with lack of proper motion and the vertebrae bearing too much weight (think of degeneration and bone spurs).

Journal of Manipulative and Physiological Therapeutics, 1992