And this

Dental fluorosis is not the only risk stemming from a baby's exposure to fluoride. In the same week that ADA issued its advisory, an article in the British journal, The Lancet, reported that fluoride may damage a child's developing brain. The Lancet review described fluoride, along with the rocket fuel additive perchlorate, as an "emerging neurotoxic substance" due to evidence linking fluoride to lower IQs in children, and brain damage in animals.

from;
http://www.mothering.com/sections/news_bulletins/november2006.html


fluoride "along with" perchlorate... synergistic? Tweet