How is drinking bottled water more likely to cause cavities?

I live in America. I put that out there, because in some countries there is no fluoride in the water. Anyhow, I like the taste of bottled water, but I'm concerned that it may cause me cavities in the long run. I heard someone off TV say that it could. How so if I'm brushing my teeth twice a day with tap water, which contains fluoride? I don't get it, I'm curious.

How is drinking bottled water more likely to cause cavities?
Its not so much that bottled water 'causes' cavities... its just that, like you said, it has no flouride.


Flouride has been shown to prevent cavities, and consuming it offers a certain amount of protection.


But, strictly speaking, no, bottled water doesn't cause cavities. It just does not have that added protection against cavities.
Reply:Tap water is treated with flouride and bottled water isnt. Why not just bottle tap water and put it in the fridge.
Reply:Most bottled water is tap water. The only bottled water that is truly different than bottled water says that it's steam distilled. I don't know of any reason that bottled water would give you cavities.
Reply:It doesn't contain fluoride like tap water.
Reply:bottled water doesnt contain flouride but you shouldnt drink it anyway. First your wasting money, and too much plastic is wasted. Also you probably dont know it but your also consuming plastic particles when you drink from the bottle.