Marco.org

“Fructose apparently tricks the brain into thinking you are hungrier than you actually are. Unlike carbohydrates made up of glucose, fructose does not stimulate the pancreas into producing insulin. Nor does it promote the production of leptin, a hormone made by fat cells. Under normal conditions, the amount of insulin and leptin in the body signal to the brain that you’ve had enough to eat. Meanwhile, fructose doesn’t seem to suppress the production of ghrelin, the hormone that triggers appetite, which normally declines after eating.” (thanks Serious Eats)