It’s just sugar.
Unfortunately, sugar made from corn, especially high fructose corn syrup, suffers from an image problem. And, even more unfortunate, hordes of folks apparently seeking ways to discredit the American agricultural industry seize on misconceptions and misinformation about the make-up, digestibility and overall health effects of corn syrup to push their cause, whatever it is.
The crusade often blames high fructose corn syrup for the epidemic of obesity in this country, discounting the role of common sense, personal responsibility and exercise. The latest such campaign I’ve noticed is a Facebook page—BAN HFCS.