I have also read that ingestion of high-fructose corn syrup does not shut of the brain’s hunger stimulus system. In other words, when you think you are hungry and go eat something with the HFCS, you may have consumed enough calories that would normally satisfy the craving, but the receptors don’t pick up the HFCS, so you want to keep eating.
The body processes fructose in a manner similar to how it processes alcohol—in the liver. Most of it ends up being stored as fat. Glucose, otoh, is processed by the pancreas and then used immediately by the body.
That's the most interesting thing about this study. The HFCS-fed rats gained more fat around the belly even though they ate the same number of calories.