Comment by acidmath

Pretty much everyone I personally know, this in part to coming from a family of relative affluence in highly liberal areas, has religiously filtered their water to keep additives (such as fluoride) from going into their bodies. This same crowd has savvy towards dental hygiene, they're all into oil pulling, and brushing with Fennel oil and all that. Eliminating yeast (which is fungus, not bacteria) from the mouth prevents the biofilm that creates the necessary conditions for dental cavities.

Even the poorest Americans can afford coconut oil and Fennel oil.

There's no reason to drink that shit (fluoride), there's no reason to brush with it either.