well, distilled water is bad because it pulls good stuff out of you, but fluoride is still bad too. fluoride is rather rare in nature, and therefore is not something your body has developed any need for. many fluoride salts are known and widely accepted neurotoxins in larger quantities (even wikipedia states this), so its not a huge jump to assume that micro dosing over very long periods of time will lead to no good. and that's before you bring up specific studies that have proven a correlation between fluoride consumption and lower iqs.
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