They have to contend with pork that is sometimes injected with water to make it heavier or, worse still, with poisonous chemicals to make the meat less fatty.
This is the fact that the French tend to eat fatty diets rich in red meat but to have the survival characteristics of those whose diets are lean and vegetarian.
The Mediterranean diets pushed either olive oil or tree nuts in addition to fatty fish, beans, tomato sauce, white meat and wine (for those already habitually drinking).