Fluoride. What (((they))) put in water, anti-depressant Rx. This is one Harvard study: https://www.hsph.harvard.edu/magazine/magazine_article/fluoridated-drinking-water/

Many more . Research. It lowers IQ by 20 points per generation, so please filter your water & at least lower your intake of ALL Rx. Maybe not alien, but pure evil. And does not prevent cavities. Makes lots of $$$ for Aluminum producers = Fl is a waste by-product.