I know cavemen didn't eat grains....but they lived in CAVES....
our diets have changed, and we are living longer....we live in buildings and drive cars and send people to the moon....
if the human diet has evolved, so has the human race, for the better....
its like pork....the use of pork as I understand it saved western civilization in Europe...now, in the world, which populations have prospered and grown, and which populations remain in the dark ages (mid east) and who eats pork and who doesn't...???
“but why grains?....why?.....its a perfectly natural food straight from the fields...”
It’s the modifications since made, due to hybridization. There are books on it - it’s bad. For example, wheat used to grow to 6 feet throughout history - until about, now it grows to 18”, and that’s just the part of the physical changes. The chemical changes are horrendous. Look it up.