With that in mind, consider a government which tries to set the diet for all people, regardless of genetics, with the same requirements. Different populations over generations adapted to specific diets found primarily in their region. You ate differently if you were a Chippewa Indian than someone from the coast, for instance. If your ancestors thrived on a diet of red meat, why wouldn't you?
Yet the Government consistently hammers round pegs into square holes without regard for ancestral diets which developed over hundreds, if not thousands of years (the most successful on those diets lived to procreate and flourish, those not adapted died out).