Freakonomics Radio is hosted by Stephen Dubner, who frames each episode around a specific empirical puzzle and brings in researchers, physicians, or officials to work through the evidence. The show mixes newly reported, sequentially numbered interview episodes (e.g. 'Why Is 95 Percent of the World's Bourbon Made in Kentucky?') with periodic 'Update' episodes that revisit past segments, such as a rebroadcast on New Year's resolutions featuring behavior scientist Katie Milkman. A recurring method is the natural experiment: comparing London Tube commuters before and after a strike, or traffic fatalities on days when major albums are released, to isolate cause from correlation. Health and medical policy comes up frequently, covering Alzheimer's drug research, FDA commissioner Marty Makary's reform agenda, and disputes over vaccine and food guidance. Personal finance is another recurring thread, with episodes testing whether mainstream money advice like the debt snowball method or fixed-rate mortgages holds up against economic research. Guests tend to be academic economists, behavioral scientists, and health researchers, alongside occasional public officials such as transit executive Andy Byford. Dubner acts as interviewer and narrator throughout, pressing guests to test their claims against data rather than simply presenting them. The show suits listeners interested in applied economics, evidence-based health policy, and data-driven takes on money and behavior. Episodes run roughly 45 to 60 minutes and are structured as single-topic deep dives rather than news roundups.