Questions for Pseudoscience | Does Fluoride Lower IQ?

There's a few times where I say "fluorine" or "fluorination" instead of "fluoride" or "fluoridation". that's my bad. Chalk it up to getting this video in out in enough time before school starts.

Sources:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5285601/
https://bmcpublichealth.biomedcentral.com/articles/10.1186/s12889-020-09765-4
https://www.prnewswire.com/news-releases/harvard-study-finds-fluoride-lowers-iq---published-in-federal-govt-journal-163531556.html
https://www.hsph.harvard.edu/news/features/fluoride-childrens-health-grandjean-choi/
https://www.forbes.com/sites/brucelee/2019/08/20/fluoride-and-iq-what-is-the-link-what-this-study-says/?sh=73d837aa3cc6
Adderkleet
samadam
https://www.webmd.com
https://pubmed.ncbi.nlm.nih.gov/31743803/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5285601/
https://bmcpublichealth.biomedcentral.com/articles/10.1186/s12889-020-09765-4
https://www.prnewswire.com/news-releases/harvard-study-finds-fluoride-lowers-iq---published-in-federal-govt-journal-163531556.html
https://www.hsph.harvard.edu/news/features/fluoride-childrens-health-grandjean-choi/
https://www.dentalcare.com/en-us/professional-education/ce-courses/ce410/fluoride-s-mechanism-of-action
https://www.c-span.org/video/?17541-1/commencement-address-world-order
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3491930/
https://www.forbes.com/sites/brucelee/2019/08/20/fluoride-and-iq-what-is-the-link-what-this-study-says/?sh=73d837aa3cc6
https://en.wikipedia.org/wiki/Water_fluoridation_in_the_United_States#Federal_drinking_water_regulations
Healthcare triage
https://en.wikipedia.org/wiki/H._Trendley_Dean
https://www.crandalldentistry.com
https://en.wikipedia.org/wiki/Dental_fluorosis
https://pubmed.ncbi.nlm.nih.gov/13487630/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3491930/
https://ehjournal.biomedcentral.com/articles/10.1186/s12940-019-0551-x (META ANALYSIS)
https://www.snydersmile.com/post
https://www.youtube.com/watch?v=l8EO9Y1ZO9E
https://www.youtube.com/watch?v=dRw8Z32ECKo
https://fluorideexposed.org/norman-rockwell-fluoride-toothpaste
https://www.atomicheritage.org/article/manhattan-project-spotlight-french-scientists
freepnglogos
https://www.myfooddata.com/articles/high-fluoride-foods-and-drinks.php
pngitem
https://www.analyticaltechnology.com/analyticaltechnology/gas-water-monitors/blog.aspx?ID=1417 https://clb.org.hk/content/workers%E2%80%99-interests-sidelined-china-pushes-ahead-coal-mining-consolidation
https://www.youtube.com/watch?v=440zPxkCl9o
foxnews