The rate of hip fractures has been steadily falling for twenty years in Canada and the United States, but experts aren't sure why. Researchers say that bone-saving drugs, fall prevention awareness, a drop in smoking and other factors all contribute to the drop, but they don't explain all of it. In this article from the New York Times, scientists discuss the mysteries behind the falling fracture rate, and explain why it's vital for doctors and patients not to become complacent about the risks of osteoporosis.
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