Why on earth would a nutritionist write about addiction rehab and recovery? When I was a kid, I never thought I’d study science or become a writer, let alone one who writes about health and substance use disorders, which is the technical name for drug and alcohol problems. After all those adolescent arguments with my science-editor/author father, I certainly wasn’t going to follow in his footsteps! But through familial osmosis (thanks, dad!) and a series of events in college, I discovered my passion for science, got both bachelors and masters degrees in nutrition and food science, and became a registered dietitian. After teaching at a nursing school for a while, then during a period of clinical work at a weight loss program (counseling hundreds of people), I began my quest to understand how people change – at the same time developing a deep respect for how difficult it is to change.