https://stevekirsch.substack.com/p/the-case-against-fluoride
A short substack column but long enough to provide details, sauce, and suggestions, including how to filter flouride out of your water. The situation with flouride is similar to that with the "vaccines", as Kirsch describes:
Get your town to stop fluoridating the water. It’s poison. You will have to overcome the same disbelief you get when you tell people the COVID vaccines aren’t safe.
Change the law in your state to outlaw fluoridation. Like vaccines, the science is crystal clear when you look at it; but nobody wants to look at it. After we take down the COVID vaccines, people will hopefully be more receptive to looking at the risk-benefit here.
If you can read this article from Epoch Times, (I modified the link to bypass paywall but its still safe) it discusses a study done recently on urine from pregnant mothers, assessing their flouride levels, then following up with the IQ of their kids around 4-5 yrs old.
STORY AT-A-GLANCE A U.S. and Canadian government-funded observational study found that drinking fluoridated water during pregnancy lowers children’s IQ; a 2022 study by the same team will assess the neurotoxicity of early-life exposure to fluoride
In the earlier study, a 1 milligram per liter increase in concentration of fluoride in mothers’ urine was associated with a 4.49-point decrease in IQ among boys only, while a 1-mg higher daily intake of fluoride was associated with a 3.66 lower IQ score in both genders between ages 3 and 4
The findings were hotly criticized by pro-fluoride agents, including the American Council on Science and Health (ACSH) and the Science Media Centre (SMC), two well-known front groups for the chemical industry
As of January 2022, there are at least 74 studies showing fluoride exposure damages children’s brains and lowers IQ; there are at least 60 that found that fluoride exposure impairs the learning and/or memory capacity of animals
There are also more than 2,000 other studies detailing other health effects Research published in 2017 found that, compared to a mother who drinks fluoride-free water, a child of a mother who drinks water with 1 part per million of fluoride can be predicted to have an IQ that is 5 to 6 points lower. They also found there was no threshold below which fluoride did not affect IQ
https://www.theepochtimes.com./bombshell-study-confirms-this-daily-drink-lowers-iq_4744822.html
I wasn't thrilled with the controls when I first read that paper, though I'll go back through the methods. They certainly could be right. If they are, I wonder if it's an honest, unintended consequence of well-meaning people, or if it's cabal trying to keep the poors even stupider. IQ is just notoriously hard to research and control for.
If you’re interested in digging further, checkout a book called The Fluoride Deception. It traces the story back to WWII and the atom bomb. Pretty interesting.