Comment by oaktrout
21 days ago
The study and my quote literally say " drinking water containing more than 1.5 milligrams of fluoride per liter".
It did not find it lowered IQ in all drinking water concentrations, but it definitely found it in some drinking water concentrations.
So yes, they did explicitly find fluoride in drinking water at certain concentrations was associated with lower IQ.
Are you defining "drinking water concentrations" as "concentrations that have not been shown to be associated with lower IQ."?
I see the goalposts are moving from "fluoride in drinking water concentrations" (implication: concentrations commonly found in municipal drinking water) to "fluoride in drinking water at certain concentrations" (i.e. any arbitrary number that could support your position).
Anyway, there's a pretty obvious definition of "drinking water concentrations": the recommended amount for US drinking water. Again, the authors of the study bolded this sentence to ensure you wouldn't miss it:
> It is important to note that there were insufficient data to determine if the low fluoride level of 0.7 mg/L currently recommended for U.S. community water supplies has a negative effect on children’s IQ.
My first sentence in my original post was " The conclusion from the largest and strongest studies is that there is a certain level of fluoride that harms IQ." I did not move the goal posts from there.
I was replying to a comment that said "fluoride in the drinking water concentrations is proven safe" (there is actually no proof of this).
I never claimed that all fluoride levels harm IQ.
It's great that the US recommends that fluoride doesn't exceed levels that are proven to harm children's IQ, instead they only recommend levels for which there is "insufficient data".
I suppose we will ignore the people who are still drinking water with levels above what is known to be harmful.
To be clear, about whom exactly are we talking here? Who are the actual people drinking water with known harmful levels of fluoride that we’re ignoring?
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