https://jamanetwork.com/journals/jamapediatrics/fullarticle/2828425

Indirect: murder by inhection

Across 74 studies, higher fluoride exposure is associated with lower IQ in children. 1–2 IQ points per mg/L https://jamanetwork.com/journals/jamapediatrics/fullarticle/2828425 If you need more papers, let me know.

I lost it because fluoride dropped my IQ

Here’s one from the NIH: https://ntp.niehs.nih.gov/research/assessments/noncancer/completed/fluoride