TEFLON is a terribly toxic material. I was reminded of this when I read this great post about how to cook without food sticking to your pan posted by 
Using non-stick cookware is really really not good for you.
Here is a lengthy article that was published in the NewYork Times Magazine back in january. It's about a big corporate lawyer who uncovered how, for years and years, DuPont hid its purposeful negligence in the making of teflon ruining the livelihood and health of the people in a small town in West Virginia.
http://www.nytimes.com/2016/01/10/magazine/the-lawyer-who-became-duponts-worst-nightmare.html?_r=0
Seriously, read it and weep.