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Study: Lightweight Human Skeleton Due to Less Activity

The bones of modern humans are more fragile than those of non-human primates and our hunter-gatherer ancestors, and we have the agricultural revolution to blame. Researchers from Penn State and the University of Cambridge compared the top of the femur, where the long legbone joins the hip, in samples from early farmers, foraging populations and non-human primates. CT scans showed the honeycomb-like bone inside the femur head of hunter-gatherers was much denser than the more sedentary...

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