>>836
Let's not pick on fluorine specifically. Iron (fe) is
the most common trace element to poison people.
We are 96% carbon, nitrogen, hydrogen and oxygen. The other elements that make up our bodies are trace elements. Flourine is one of those trace elements. If you have to much of any trace element you will be poisoned. Everything in moderation is a good way to live. If you drink sea water, you will get sodium poisoning. If you eat paint chips you will get lead poisoning. Be careful with what you supplement your diet with. You are primarily a carbon, hydrogen, nitrogen, oxygen unit.