[competentone]

Not sure about the cancer or thyroid problems, but do know that sodium fluoride (that's what is in your toothpaste and what they add to city water supplies) is a deadly poison.

Two grams of the stuff will kill most adults -- that's about the amount in two tubes of toothpaste.

Toothpaste is probably safe to use, as long as you are very careful and don't swallow. I would suggest Tom's natural toothpaste -- their fluoride-free line -- for any children young enough to be tempted to eat/swallow it.

I don't, and would not suggest that anyone drink fluoridated water for any extended period of time. It might be in the "parts per million" in the water, but, depending on how much water you drink, that can start adding up to significant amounts over time.