[ZenGum]

I often see the "Fluoride is poison!" hype from a few of my odder FB friends. Often with the "the Nazis used it, too!" add-on.

There have been a number of peer reviewed studies -mostly in China - showing that high levels of fluoride is associated with lower IQ. As well as the large numbers of possible confounding factors in industrial China, the key point is that these fluoride levels are many times higher than those you get from drinking fluoridated tap water.

Salt, water, oxygen ... pretty much everything is bad for you if you have too much. And too little. It's all Goldilocks, folks. Now eat your fluoridated soup.