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That is not a study of drinking water concentrations, but much higher naturally occurring levels. Its also has pretty poor confidence intervals:

https://journalistsresource.org/home/how-to-read-this-study-...

https://jamanetwork.com/journals/jamapediatrics/article-abst...

I would be careful throwing a single study around as proof of anything, here is one with a different conclusion:

https://journals.sagepub.com/doi/full/10.1177/00220345241299...



The source of fluoride is irrelevant, the effect of fluoride is cumulative. If you get 0.7mg/L from drinking water and then add toothpaste and other sources, you could easily surmount the level where harmful effects occur.


You are making a lot of assumptions to fit your narrative, the higher natural source would also be cumulative with toothpaste etc.

There is no conclusive data to support your assertion and there is a lot of data to support the benefits of fluoridation.

Did you actually read any of what I posted to understand it or is your mind already made up?




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