studies: one by the Pennsylvania School of Medicine, the other by the US. Naval Academy. Their research showed some interesting results. They found that there was no difference in the skin condition between the study participants who did, or did not, eat chocolate There is also no proof that chocolate is the cause of tooth decay fact, it is believed that the cocoa butter in chocolate forms a coating over teeth that may help to protect them. The sugar in Chocolate can cause cavities, but no more than sugar in any other food or drink.