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It seems the people concerned about the possible health effects of fluoride don't really think of the benefits. Fluoride is VERY effective in fighting tooth decay, which is more important than just for your teeth, tooth decay over time can cause your liver to stop working which means you get a transplant or die. It is quite cheap to add to city water, and reach almost everyone in a city.
That being said, most people in western countries brush their teeth, see a dentist and all that stuff. Fluoride doesn't need to be swallowed, it can do it's job just as well in tooth paste or mouthwash, or even just add a small pill to water and rinse with that. Also it is almost impossible to filter fluoride out of your water if you don't want it, and it kind of sucks to be medicated with something and have little choice in the matter, no matter how safe it is.
Personally I think it should be used in the water in poor countries / areas, and phased out as most people can afford dental care. Overall I think the rewards are greater than the risks, but for most westerners, there is no need to be drinking it.
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