There are two types of fluoride. Calcium Fluoride, which appears naturally in underground water supplies, is relatively benign. However, too much consumed daily can lead to bone or dental problems. Calcium is used to counter fluoride poisoning when it occurs. This redeeming factor indicates that the calcium in naturally formed calcium fluoride neutralizes much of fluoride’s toxic effects.
On the other hand, the type of fluorides added to water supplies and other beverages and foods are waste products of the nuclear, aluminum, and now mostly the phosphate (fertilizer) industries. The EPA has classified these as toxins: fluorosilicate acid, sodium silicofluoride, and sodium fluoride.
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