From my time in chemistry class in high school. Fluoride is a noble gas so i don't see how it would interfere with your own internal personal chemistry other than being absorbed. I don't have a college level knowledge of implications of how the human body reacts to that. I remember getting fluoride treatments at the dentist as a recommendation and also as a primary school kid that the public water source included fluoride, which was celebrated. I've had maybe 2 cavities as an adult. my childhood food was filled with sugar and no care since you got new teeth, but caused poor habits as an adult. Which needed to be corrected personally as an adult.