Comment: Correct; reverse osmosis

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Correct; reverse osmosis

Correct; reverse osmosis membranes are supposed to filter out large particles, not water molecules which must be able to pass through, or smaller particles, such as fluorine ions.

I've yet to see any credible research indicating there's a problem with the fluorine content of the US water supply.

David Icke is not what I consider a credible source, nor is Edgar Cayce.