BROADCASTS.com

b'All of us think we know what addiction looks like: it\\u2019s the compulsive consumption of drugs, alcohol, or nicotine. But psychiatrist Anna Lembke argues that this definition is far too narrow \\u2014 and that a broader understanding of addiction might help us to understand why so many people are anxious and depressed. This week, we begin a two-part series that explains how and why humans are wired to pursue pleasure, and all the ways the modern world tempts us with addictive substances and behaviors.'