Cons of adding fluoride to drinking water?

The Cons of Fluoride in Drinking Water

   Many feel it is an unethical form of mass-medication as individuals do not give consent.

   Fluoride dosage cannot be controlled, meaning that people who drink more water ingest more fluoride.

   Excess fluoride exposure can lead to dental fluorosis, which creates white streaks or brown stains on teeth, creates pits in teeth or even break the enamel of the teeth.

   Research has shown that fluoride works best when it is applied topically, not ingested.

   Multiple studies have shown there is no significant link between fluoride exposure and tooth decay.

   Most developed nations, including Japan and 97% of western Europe, do not conduct water fluoridation on their public water supply.

   Studies have shown that even low levels of fluoride have been linked to negative health outcomes, like bone fractures, thyroid disorders, and impaired brain development and function

Explanation:

the answer is na (sodium)

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