Osteoporosis (or porous bone) is a disease in which bone loss occurs, so bones become weak and are more likely to break. Without prevention or treatment, osteoporosis can progress without pain or symptoms until a bone breaks (fractures). Fractures commonly occur in the hip, spine, ribs, and wrist.
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Calcium 101
An estimated 18 million Americans are at risk for osteoporosis. Taking the right calcium supplements now can help fight bone loss later. See more WebMD Videos »
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