I have found different levels reported for the UL of fluoride. The lowest I found was 3-4mg/day for women and men respectively, but I also found figures ranging from 6-10mg/day (Council Responsible Nutrition). Skeletal fluorosis begins at around long term exposure of 20mg per day. Though the study showing skeletal and dental fluorisis linked to tea in Tibetans had consumption of 5mg for children and just over 10mg for adults.
The water in my area is fluoridated to about 1mg/L. The article linked to above (
http://www.poisonflu...een_tea___.html) gives varying figures for the fluoride content of tea. Some of the measures were very high(rather extraordinarily high), ranging between 50mg/L - 350mg/L. Some where as low as 4.57mg.
One tea website, Teavana, admittedly a seller of tea, suggest tea contains only 0.3-0.4mg per cup for green tea. Another, Green Tea Library, suggest that a liter of tea contains about 1.5mg/L.
So what is with the discrepancy in the data? Really they could all theoretically be correct. It would just depends on the grade and type of tea. Tea absorbs fluoride from soil and deposits it in the leaves. Older leaves then have more fluoride and cheaper, lower grade teas are made from these leaves. These are often sold to make brick or powder teas or used for tea bags. Younger leaves should have less fluoride content with white teas having the least. Loose leaf teas, usually better quality, should also have less. It would depend on the soil too. There is some indication that tea grown in Japan has lower fluoride content than similar teas grown in China.
Oblomov-
We have similar taste. Though I have not tried yin shen, I certainly will find some given your description and what I have now read about it. Bi Luo Chun is one of my favorites and not just because I love the story of how its fragrance was discovered when a tea picker had filled her baskets and kept the extra between her breasts. Incidentally both are made from the early cropped leaves in spring and should be very low in fluoride. I am convinced that even if I never took a sip of the beverage, my health would still benefit just from the preparation of it.
Destiny Equation-
Did the doctor every offer a diagnoses? Either way, I am glad you found something that was able to help you recover.
*I haven't figured out the quoting system yet...