Fluoridation: Hexafluorosilicic Acid is a chemical that has not been approved by the FDA as an addit
The FDA has not approved the toxic waste product hexafluorosilicic acid, yet this substance is used in growing vegetables, fruit, as well as supplying cattle with water, so now most processed foods and meat have higher levels of fluoride than "naturally" was occurring prior to mass water fluoridation practices in the US.
To find out how much fluoride you might be consuming you can check it out at the following URLs:
http://www.ars.usda.gov/SP2UserFiles/Place/80400525/Data/Fluoride/F02.pdf
and http://nutritiondata.self.com/tools/compare/welcome?returnto=/tools/compare