Over the last decade, an extraordinary scientific breakthrough has taken place. A new kind of drug has arrived on the market, working in an unprecedented way to revolutionise weight loss and dieting. In 2023, Johann Hari began injecting himself with one of the weight loss drugs transforming how we look, feel and live. What began as a personal journey soon took him on an international investigation, tackling some of the most world-changing issues as he asked: Who should be taking these medications? How are they set to change not only the way we think about weight loss, but our economies? What are the benefits - and what are the risks? This is the book to read on the weight loss drugs taking over the world.