This guy and his research will blow you away, it has made me do a full u-turn on drinking black/green tea:
Search the fluoride content of 357+ best-selling teas including green, black, white, herbal, oolong, instant and iced tea.
truthaboutfluoride.com
Apparently caffeine inhibits the body's process to detox fluoride, but apart from that, you can find plenty of non-fluoride coffee which is fine to drink so the coffee-drinkers are safe, unlike with regular black/green tea, which seems to be almost entirely contaminated with fluoride these days. Wop wop.
I tried starting a coffee habit again and couldn't moderate it, so now I'm caffeine-free mostly, alternating between drinking Rooibos, dandelion root, and herbal teas throughout the day. I really enjoy the coffee aroma too, maybe i'll just sit in the corner of a coffeeshop every now and then to breathe it all in, lol.
Make sure it's fluoride-free water too
33+ water filers were independently tested with a fluoride meter to determine the best fluoride water filters of 2023.
truthaboutfluoride.com