Guest Anna Lembke is a psychiatrist and a specialist in the behavioral sciences who studies addiction. While there is tremendous variety in the things people can be addicted to, all forms are tied to dopamine, a biochemical that is key to human senses of pleasure, reward, and motivation. She says that new treatments are combining traditional abstinence with programs that help patients reenergize dopamine centers in the brain through physical exercise, which is a known producer of dopamine. If patients can reach 30 days of abstinence there is a good chance at recovery, Lembke tells host Russ Altman on this episode of Stanford Engineering’s The Future of Everything podcast.