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6,000-Year-Old Knee Joints Suggest Osteoarthritis Isn’t Just Wear and Tear

If you think you’re hearing about more and more people with arthritis in their knees, you’re not just imagining it. Scientists say it’s really happening: Osteoarthritis of the knee is twice as common now as it was before the 1950s, according to a report by NPR. To help with their research, study authors looked at human skeletons from people who died 6,000 years ago, and found that if you want to keep moving, you need to keep moving. In other words, you can improve your joint...