Depends who's lobbying I guess, butter vs margarine, coffee vs tea, lard vs sunflower oil. Joking aside traditional western Europe cuisine was based on lard frying (people also ate large amount of eggs which is also supposed to be bad for you) and many of them reached 100 years and more. Of course env pollution was not that big, but limited calories intake plus animal fats and physical activity contributed to their longevity greatly.