Human skeleton has changed drastically during the thousands of years of evolution. According to the research published in the PNAS (Proceedings of the National Academy of Sciences of the United States of America), a multidisciplinary science journal, the advent of agriculture and the subsequent change of human lifestyles from hunter-gatherers to farming-based have caused a considerable reduction in the weight of the human skeleton. Moreover, this has caused a sharp reduction in the bone densitie

Human skeleton has changed drastically during the thousands of years of evolution. According to the research published in the PNAS (Proceedings of the National Academy of Sciences of the United States of America), a multidisciplinary science journal, the advent of agriculture and the subsequent change of human lifestyles from hunter-gatherers to farming-based have caused a considerable reduction in the weight of the human skeleton. Moreover, this has caused a sharp reduction in the bone densitie