The practice of adding a chemical - sodiumsilicofluoride or hydrofluorosilicic acid - to everybody's drinking water is nothing short of fanatical.
OPINION: What rational person takes a substance captured in a factory smoke-stack because it's too toxic to be discharged into the air, and then cannot be got rid of in the sea or a river because it's not allowed by international marine law, and decides to put into every man, woman and child's drinking water?
And that's regardless of whether the person is sick or how they react to it and even though they may have said they don't want it.