...I heard a report maybe a year ago on public radio about the serious health threat in fries, potato chips, even bread or cereals like Cheerios. They have substances that can form acrylamides in the system, which researchers believe can lead to cancer:

http://www.curezone.com/art/read.asp?ID=6&db=12&C0=7

But that's not necessarily a McDonald's-centered issue. People have an obligation to educate themselves. Caveat emptor! Seems like this guy is trying to boost the fat-suits coming out of the woodwork these days.