The cover story of the June edition of "Chemical and Engineering News" is entitled "Fabulous Fluorine".
It can be read here:
http://pubs.acs.org/cen/coverstory/84/8423cover1.html
Excerpt:
"As many as 30−40% of agrochemicals and 20% of pharmaceuticals on the market are estimated to contain fluorine, including half of the top 10 drugs sold in 2005. Developmental pipelines are predicted to contain even more."
Adverse health effects are not discussed...