Hvis du drikker mye te generelt kan det tenkes at du får i deg mye fluor pga. det også.

Due to increased water, air, and soil pollution during the last several decades, the amount of fluoride in most teas today is staggering. A typical cup contains as much fluoride (1 mg) as an entire quart of artificially fluoridated water--with some samples of tea containing traces of DDT. One sample of Chinese green tea tested had a whopping 22 mg. of fluoride per tea bag!
http://thyroid.about.com/od/bookssuppor ... erview.htm

Og du har sikkert funnet fram til denne også:

http://thyroid.about.com/od/drsrichkari ... de2006.htm