i just did a whole report on this for chem class. fructose no matter what form, is converted to energy by the liver, fructose is not bad, its the large amounts we are exposed to IE high fructose corn syrup in EVERYTHING. When someone has to much high fructose corn syrup (which may have the same glycimic index as sugar, but its composition is completely different), the liver gets stressed and insulin is then released and sugars spike up and down. Insulin is the fat storage hormone. when the liver is stressed this much, it can also cause issues with another hormone, besides insulin, called lipton. Lipton is what tells your brain to stop eating, in a sense. when to much sugar is consumed, it can actually stop releasing that hormone because the liver is stressed out. anyway, it was an interesting paper and special.