Ten thousand years ago many communities in western Asia stopped procuring food by hunting and gathering and began instead to cultivate food. Archaeological evidence reveals that compared to their hunter-gatherer forebears, the early agricultural peoples ate a poorly balanced diet and had diet-related health problems, yet these peoples never returned to hunting and gathering.
The statement 'Thousands of years ago similar shifts from hunting and gathering to agriculture occurred in many other parts of the world' most helps to explain why the agricultural peoples of western Asia never returned to hunting and gathering.