The BBC World Service conducted an investigation into Steven Bartlett's podcast, 'Diary of a CEO,' which has shifted from business topics to health-related content. Over 15 recent episodes, an average of 14 harmful health claims were made by guests, with little challenge from Bartlett. Health experts warn that these claims could undermine trust in medicine and potentially harm patients. The podcast has featured guests like Dr. Mark Hyman, who made unsubstantiated claims about gluten and the ketogenic diet as cancer treatments. Despite the podcast's popularity, especially in countries like Nigeria, India, and Mexico, the lack of fact-checking and the spread of misinformation pose significant risks. Experts emphasize the importance of verifying medical information through reputable sources and caution against relying on internet-based advice, which can lead to dangerous health decisions.