Years ago I got all excited when I read an article saying that a "left-handed" sugar molecule had been created, and that they were going to try and produce enough of it to market. Supposedly it contained all the properties of "normal" (right-handed molecule) sugar, except--that the left-handedness would cause your body not to process it. So I thought people were going to be able to eat all the sweets they wanted to with no effects from the sugar. But I never heard anything more about it. Pity.