Dr Sin Hang Lee, founder of the green tea TeaForHealth, yesterday demanded that the FDA introduce a tea flouride safety standard after recent research
suggested that ingesting certain levels of the chemical could be harmful, writes Philippa Nuttall.
Lee also made public independent laboratory results confirming that his TeaForHealth beverage contains low levels of fluoride.
"All tea leaves contain fluoride, however the mature, old tea leaves contain more fluoride, as much as 10-20 times of the fluoride levels in the
young leaves of the same tea plant," Lee explained to FoodNavigatorUSA.com.
"In general, the level of fluoride in tea is inversely related to the EGCG contents. The more natural EGCG in the tea leaves, the less fluoride" he
added.
Lee told the FDA that TeaForHealth green tea, if prepared properly, contains only 0.25 ppm of fluoride, whereas other teas contains up to 28 times
more of the substance or 7 ppm.
He said that while the FDA has set 1.4-2.4 ppm fluoride limit for bottled water and other bottled beverages, it has not set a fluoride limit on tea
and should consider doing so.
Researchers at Washington University School of Medicine in St. Louis claimed in January that instant tea beverages may be a source of harmful levels
of fluoride, after finding that some regular strength preparations contain as much as 6.5 parts per million (ppm) of fluoride.
In the US the maximum level is set a 4 ppm maximum level for drinking water, 2.4 ppm is permitted in bottled water and beverages.