Fluoride was used in the past to pacify populations, at least, that is the claim made by anti-F people (I haven't myself run down the sources).
There are books out concerning F and its effect on the body's metabolism, such as this one http://www.amazon.com/Fluoride-Aging-Factor-Recognize-Devast... .
Too much fluoride can lead to fluorosis - there is this case of fluorosis among horses drinking municipal water that was fluoridated http://www.fluorideresearch.org/391/files/3913-10.pdf .
edit: link found via google: http://www.livescience.com/28078-skeletal-fluorosis-tea-drin...
Fluoride was used in the past to pacify populations, at least, that is the claim made by anti-F people (I haven't myself run down the sources).
There are books out concerning F and its effect on the body's metabolism, such as this one http://www.amazon.com/Fluoride-Aging-Factor-Recognize-Devast... .
Too much fluoride can lead to fluorosis - there is this case of fluorosis among horses drinking municipal water that was fluoridated http://www.fluorideresearch.org/391/files/3913-10.pdf .