  urlLink Yahoo! News - Fructose Sweetener Linked to Obesity Rise : "The debate over high-fructose sweeteners centers on how the body processes sugar. Unlike glucose, a major component in table sugar, fructose doesn't trigger responses in hormones that regulate energy use and appetite. That means fructose is more likely to be converted into fat, the researchers said. The sweeteners are also cheaper to produce and use in food manufacturing than cane and beet sugars, the study noted. " (this last line's misleading, it's only cheaper b/c the gov. subsidizes corn production) 
