What about the feelings of love that people find in addictions, particularly with opiates -the warmth Jamie Lee Curtis and others spoke of? That is, in large part, a function of the brain's internal opiate apparatus in which endorphins, our own natural, endogenous opiates, are the neurotransmitters. Dr. Jaak Panksepp suggested twenty years ago that opiate addiction is rooted in the evolutionary brain mechanisms that promote social bonding: nurturing, emotional closeness, and social affiliation.