Actually, the representation of the ancestral diet being primarily meat is incorrect - outside of a few examples where there just weren’t many plants available. Largely, humans ate what they happened upon. Meat was a scarce byproduct of another predators meal. Ie we ate what the big cats left behind.

Furthermore, the ultra refined and concentrated foods we now eat didn’t exist until very recently. The amount of sugar cane needed to produce a single can of soda isn’t something any human would sit down to eat.

Edit-changed are to ate