Cavities are caused by bacteria feeding on sugars, not by specific foods or sugar itself.

“no specific food not even sugar causes cavities cavities are not caused by sugar cavities are caused by bacteria that feed on sugar and now that's not just a little bit of a Twist in the mechanism that's a critical point there's no specific food not even pure sugar not even like a hard candy like a delicious Jolly Rancher I used to like those when I was a kid they get stuck in your tooth that causes cavities no it's the bacteria that feed on sugar that then produce acid that burrows down through that degrades that demineralizes the tooth in this very focal area that we call a cavity okay”