The study, published in PNAS, examined Wisconsin state testing records, archival information about when Wisconsin cities began to fluoridate their water, and data from the Wisconsin Longitudinal Study, which has followed a random sample of 10,317 high school seniors from 1957 through 2026. Key findings include:
- There is no evidence supporting a connection between community water fluoridation and children’s IQ.
- There is also no evidence supporting a connection between community water fluoridation and cognitive functioning at various points later in life.
- Findings confirm evidence published in previous research which also used a national sample, but considered school achievement test scores instead of actual IQ scores.
People don’t even know fluoride in municipal water supplies is a waste product of fertilizer production.
There has never been a reason to drink fluoride because it works topically. Ingesting it has no benefit and causes unsightly fluorosis.
It is a poison if diluted enough doesn’t really cause any problems just like diluting any poison enough.
The entire case for adding to water supply relies on no brushing or dental care because if you brush and have dental care there is no measurable difference by also having it in the water.
It is unnecessary and dumb to do in a modern country.