Is Fluoride poisonous? It had been used as rat poison and insecticide. Causes bone cancer and...?

It is either piousness or not good for you. Sweet and Low causes cancer in rats, but as the Doctor said if you ate what they feed them you to would get cancer. Read the ingredients on the food you are now eating and drinking. They all contain chemicals that in large doses would kill you, but are necessary to day to keep the food fresh. In the 50's Tasty Cake was sold in the stores and was changed every three days because there was no chemicals in them and they would go bad, or get mold on them. Today that doesn't happen, everything has chemicals in them, food,Drinks Etc., All are considered safe if taken or eaten in the proper dosage.

Flouride is one of the elements, and it exists usually as a gas. Discovered accidentally was that if it is in the water, it strengthens the teeth and so greatly limits the amount of tooth cavities one has (along with the great pain and infection risk that accompany cavities.) The result of flouride in the water and the toothpaste is yours truly, who still has all his teeth (except for the ones I lost by hitting the pavement, a car, etc.) And I'm smarter than most people on this planet. Flouride has no effect on the brain. Lead is what makes you stupid, and if I'm any less intelligent than I should be, it's because I was growing up in So Cal in the sixties when all the cars were burning gasoline with tetraethylene lead in it, and I was daily breathing in that lead. And ones made stupid by lead will be more docile, yes. But that's not flouride.

Aluminum gives you Alzheimer's. But that's a whole other topic.

A lot of what has been said here is interesting, but hasn't really answered the question. Why is fluoride safe when it is a toxic waste and is used as RAT Poison? The Answer is simple... do a google search on Fluoride and Nazi Germany. I did an article on this very subject called, The "Pimp" Juice Conspiracy.

Several billion people drink fluoridated water, and human IQ and life expentancy just keeps going up.

Anything is lethal in large doses, but flouride in water is in the low parts per million.

Fluoride is not a by-product of aluminum.

The alzheimer's to aluminum thing has not been proved to anyone's satisfaction.

Hydrogen killed almost everyone on the Hindenburg, and oxygen is extremely flammable....should we ban dihydrogen oxide? http://en.wikipedia.org/wiki/Dihydrogen_monoxide_h...

"Someone told me that Fluoride is a by-product of aluminum"

Really?

You understand that fluorine and aluminum are both elements, right?

If I did not already know that "fluoride fears" were a hoax, I might be quite easy to convince that someone had given you a high enough does to disrupt your common sense!

You REALLY should have paid more attention in science class so you wouldn't be so "gullible" today! (Yes, I know that "gullible" isn't actually in the dictionary, but we all know what it means, so I consider it okay to use it as if it were a "real" word...)

Anything in large quantity's can be poisonous/detrimental to your health. Too much water can kill you... Fluoride is not a "byproduct" of aluminum as they are both elements, not compounds (which can react and change). Truth is, we all need fluoride to be healthy but we go to great lengths to get what we think our bodies need, which usually leads us to destroying ourselves in the process. i would worry about the chlorine in your water more than the flouride...

Only if you wear your aluminum foil hat 24/7

It is poisonous if you eat it. The amount in water supply is very minute and you're not supposed to eat toothpaste

drinking large quantities of water can kill you. Maybe we should ban water also.

dihydrogen oxide! I like that, but did anyone get it?