http://www.activistpost.com/2012/02/mcdonalds-forced-to-stop-using-ammonia.html
I gave it up over a decade ago, and it was one of the smartest moves I ever made, after getting 'spayed' BEFORE having sex. Yech! If you still eat there, you deserve the consequences. I don't do fast food places at all, anymore. KFC is MSG Palace, and a lot of other places serve toxic crap, too. Just the smell of a Carl's Junior makes me want to hurl these days.