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What Causes Osteoporosis

Bone is a living tissue. There are two main types of cell in bone, the osteoclasts which destroy old bone and the osteoblasts which make newer stronger bone (bone formation). Osteoporosis occurs when there is an imbalance between these two processes. The osteoclasts become more active and the osteoblasts less active so more bone is removed and less formed. People with Osteoporosis lose more bone than they make.