Let's also consider the other direction -- how fresh vegetables and fruit, plus whole grains, beans, nuts, seeds, and herbs improve mood, behavior, resilience. Throw in some vigorous exercise, and for most people, drugs can't do better, without the drugs' side effects and cost.
If you look at health outcomes, this is sort of obviously not true. I don't mean the health benefits of the things you mention, I mean the "for most people" part.
Of course I realize that you are engaged in advocacy. I think it probably isn't good advocacy, people should be thinking about (and talking to their doctor about) the best way to approach their current health status, not imagining that they are going to eat well and get lots of vigorous exercise.