Adaptation To Upright Walking Leaves Humans Susceptible To Backbone Fractures

Osteoporosis is blamed for backbone fractures. The real culprit could well be our own vertebrae, which evolved to absorb the pounding of upright walking, researchers at Case Western Reserve University say. Compared to apes, humans have larger, more porous vertebrae encased in a much thinner shell of bone...

Source: http://www.medicalnewstoday.com/releases/236308.php

J. Cole Jason Mraz Adam Lambert Paramore