Dr. Gregory Marcus is the Associate Chief of Cardiology for Research at UCSF Health and an Associate Editor of JAMA. JAMA is an international peer-reviewed general medical journal published online daily and in print weekly. He joined Coffee People when I reached out to him after reading his co-authored paper Acute Effects of Coffee Consumption on Health among Ambulatory Adults (2023). In it, I read this line, "CONCLUSIONS: In this randomized trial, the consumption of caffeinated coffee did not result in significantly more daily premature atrial contractions than the avoidance of caffeine." It felt very relevant to my life (and that of our audience) considering I drink copious amounts of coffee. In this podcast we chat about how his passion for coffee turned into a long term research effort into how beverages like coffee and alcohol engage and impact the human body. Find online: https://www.nejm.org/doi/full/10.1056/NEJMoa2204737https://www.ucsf.edu/news/2025/11/431036/coffee-safe-for-a-fibhttps://ucsfhealthcardiology.ucsf.edu/people/gregory-marcusThe full episode dropped May 7, 2026. Watch and subscribe to @coffeepeoplepodcasts for more context, subscribe to the Coffee People podcast newsletter at: https://www.coffeepeoplepodcast.com/. BUY: The reliable coffee brewer that sits on our counter from Simply Good Coffee. (Affiliate Link). https://partners.simplygoodcoffee.com/roast Coffee People is presented by Roastar, Inc., the premier coffee packaging company utilizing digital printing. Roastar enables small-to-gigantic coffee businesses tell a big story. Learn more at https://bit.ly/4gIsHff and get 10% off with the code: COFFEEPEOPLE10 Follow @roastar on Instagram. Thanks for watching the Coffee People Podcast. Like all small businesses and entrepreneurs, we're still learning, modifying, and continuing to improve—at least trying to! Head to www.coffeepeoplepodcast.com for links from the show, context to our conversation, and much more. Shop all of our coffee collaborations, including Yeah, No...Yeah Coffee! Coffee People is one of the premier coffee and entrepreneurship podcasts, featuring interviews with professionals in the coffee industry and coffee education. Host Ryan Woldt interviews roastery founders, head roasters, coffee shop owners, scientists, artists, baristas, farmers, green coffee brokers, and more. This show is also supported by Marea Coffee , Cape Horn Green Coffee Importers, Sivetz Roasting Machines, Relative Coffee Company, Coffee Cycle Roasting, MAMU Coffee, Acento Coffee Roasters, Prismatic Coffee, and Hacea Coffee Source. Register to become an organ donor at: https://registerme.org/. *Clicking these links to purchase will also support Roast! West Coast through their affiliate marketing programs.
