Respectfully, I'm going to be immediately suspicious of any study that uses IQ as the measuring standard. IQ is not an objective measure of intelligence or cognitive ability. The same person taking the test will probably have a different score every time they take it. I'm not saying fluoride does or does not have an effect on cognitive ability or intelligence. But IQ is hardly going to be the way to figure that out.

Edit: I also don't know how you'd conclude it's fluoride and not literally anything else they're consuming.

The researchers analyzed 229 mother-child pairs, calculating fluoride exposure from urine samples collected during the third trimester of pregnancy. Most urine samples were collected from fasting women, which improves the accuracy of chemical testing. Children were then assessed at age three using the Preschool Child Behavior Checklist, which uses parent reports to measure a child’s social and emotional functioning.

Children exposed to an additional 0.68 milligrams per liter of fluoride in the womb were 1.83 times more likely to show behavioral problems considered to be clinically significant or borderline clinically significant. Specifically, children exposed to more fluoride had more problems with emotional reactivity, somatic complaints (such as headaches and stomachaches), anxiety and symptoms linked to autism.

No association was found with several other neurobehavioral symptoms, including “externalizing behaviors” such as aggression and attention problems.

Hmm, they are using a statistic as their study and parental reporting… what with PFOAs, pthalates, microplastics and parabens already present in water linked as endocrine disrupters I wonder how that plays over top of all of this fluoride as well.

It has been proven in repeated studies that fluoride in the water helps prevent tooth issues for children in low income families.

There is much less fluoride in water than in toothpaste, so the swallowing comparison is a little bit extra.

I don't know enough about the effects of fluoride to agree or disagree with the removal

Then why even comment on it? You realize that there are people who do know a lot about this stuff. Like they've dedicated their lives to studying it. And I imagine you could even find their published research online. You know, like actual science? Do you remember how the scientific method works?

But nah, instead you'll just make an unwarrantedly confident comment about something you know nothing about based on "vibes"

Just like American voters.