Marc Lewis recovered from drug addiction and became a developmental psychologist and researcher in neuroscience. In Memoirs of an Addicted Brain, he applies his professional expertise to a study of his former self, using the story of his own journey through addiction to tell the universal story of addictions of every kind. He explains the neurological effects of a variety of powerful drugs and illuminates how craving overtakes the nervous system, sculpting a synaptic network dedicated to one goal—more—at the expense of everything else.