I wrote a post a while ago called Sugar - Toxic?. This linked to an article in the New York Times by Gary Taubes, about UCSF professor Robert Lustig's concerns about sugar use (especially High Fructose Corn Syrup).
Lustig is interviewed on US public radio KQED San Francisco and the interview is available as a download here :
It's about an hour, with no actual adverts, and worth a listen. We're paying for convenience in more ways than one.