Donald Rumsfeld was president of Serle corporation in 1977, maker of aspartame, then, part of Reagan transition team, and got aspartame 'legalized' by appointing a defense department contractor (Hayes) as head of FDA. That's one very good reason to stay clear of it!
I was wondering if anyone would bring this up. Searle is now owned by Monsanto (see previous discussion here http://www.jehovahs-witness.com/14/60516/1.ashx ) The head the FDA that got aspertame approved then went on to take a high position at an advertising firm to promote aspertame.