As indicated by a recent study conducted by University of Cambridge and Penn State University researchers, invention of agriculture played a key part in slowly debilitating the bones/skeletons of humans.
A group of specialists from the two universities examined X-ray pictures of thigh bones from contemporary humans and contrasted those specimens and bones from old primates, including orangutans.
They found that present day human’s bones are much lighter and more delicate than those of their early progenitors. For the study, the researchers took femur (thigh bone), which is the longest and strongest bone in the human body.
The analysts presumed that human’s skeletons begun debilitating after they quit hunting and began crop farming for food. Crop farming and a more inactive way of life soon became the tradition. It diminished physical action, which prompted lighter and weaker bones.
While human hunters around 7,000 years back had bone mass like those of advanced orangutans, agriculturists around six eras later had much weaker bone mass. The scientists presumed that the old hunters’ bone mass was about 20% more prominent than that of the later agriculturists.
“The morphological differences between the extremely movable foragers and comparatively inactive agriculturalists evidently indicate physical movement as a significant determinant of bone mass in the hip joint,” researchers concluded.
