Those are all short-term phenomenons, though, providing rapid feedback in both feeling worse and having worse performance. I mean, sure, it's possible that eat

Those are all short-term phenomenons, though, providing rapid feedback in both feeling worse and having worse performance. I mean, sure, it's possible that eating food which makes you feel good (over weeks and months, not just for 1 hour and then w/ a hangover) is actually unhealthy, but it seems unlikely, especially if you're eating traditional foods which your body should have incorporated knowledge of through evolution.