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Bone drugs may harm what they're supposed to protect

Updated: September 01, 2006

The bisphosphonate drugs have been linked to death of bone tissue.

Bones may seem solid, the sturdy frame that supports our soft and spongy flesh and insides. But at the cellular level, bone is in constant flux. Cells called osteoclasts chomp away at it, discarding the proteins and minerals they can't use into the bloodstream. (Bone's loss is the body's gain — those proteins and minerals get used elsewhere.) Osteoblasts are the constructive counterforce — think b for builder — the busy cellular masons that work to fill the voids left by osteoclasts.

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