I read this tonight....while eating hersheys kisses...hmmmmm.
"One study out of France, presented at the 2007 annual meeting of the Society for Neuroscience, showed that when rats (who metabolize sugar much like we do) were given the choice between water sweetened with saccharin and intravenous cocaine, 94% chose the saccharin water. When the water was sweetened with sucrose (sugar), the same preference was observed—the rats overwhelmingly chose the sugar water. When the rats were offered larger doses of cocaine, it did not alter their preference for the saccharin or sugar water. Even rats addicted to cocaine, switched to sweetened water when given the choice. In other words, intense sweetness was more rewarding to the brain than cocaine."
I knew I hated rats.