GLP-1 drugs like Ozempic and Wegovy are being taken by millions of Americans. These medications have been approved for treating diabetes, obesity, and a small number of other chronic conditions. But even as experts are still learning how the drugs work, many people have found that they help with other disorders — from addiction to brain fog to arthritis — where anecdotal evidence is promising but the formal research hasn’t caught up. Julia Belluz [https://www.juliabelluz.com/], a contributing writer for the New York Times Opinion section and coauthor of Food Intelligence [https://books.apple.com/us/book/food-intelligence/id6739794014], joins Apple News In Conversation guest host David Greene to explain why what’s unfolding right now may be the largest uncontrolled drug experiment in modern history.