Over time, this adaptation became a permanent part of our biochemical makeup. Unfortunately, we still carry this craving for fat-stimulating foods. Cave women didn't have any chocolate. But the craving isn't directed at chocolate. It is directed at stimulating serotonin, the dominant craving-chemical in women.
Women crave foods that stimulate serotonin and chocolate foods stimulate serotonin.
Cave women sought out high glycemic foods because high glycemic foods stored in her fat cells. Today's woman seeks out certain foods for the same reason, only we don't need additional body fat like cave woman did. Major research was done at M.I.T. by Dr. Judith Wurtman which validates this science. If you need to be convinced, just look at the fact that the number one selling drugs, before they took them off the market, were Redux and Fen-Phen. They stimulate serotonin.