What is fluoridated water doing to our children? It appears associated with osteosarcoma in boys, lower thyroid function, dental fluorosis, decreased IQ and ADHD. Fluoride may help prevent cavities with topical application, but adding it to water supplies does not seem to make any sense.

https://childrenshealthdefense.org/news/risks-to-children-from-water-fluoridation-one-dose-does-not-fit-all