There are inummerable sites with fluoride alerts all over the web. Check WHO, Unicef, American Journal of Medicine, the National Library of Medicine, the National Academy of Sciences, U.S. Dept of Health and Human Services and on and on.................if that's too much work, just do a search on "fluorosis and osteosarcoma". Fluoride threatens bone health. It's also in cigarettes, cereal, soda pop, and anesthetics. You're the one who doubts the problem. You look.
I've spent the last 20 years in practice. And a hell of a lot of medical education prior to that. As I said earlier - do what you want. However, I would never encourage anyone to chew on tea leaves. Chewing on anything repeatedly or excessively to suck the flavour out of it doesn't do much for TMJ either. Enough said. That's all I have to say about chomping on leaves. Shen