Probiotics are everywhere, but the science that explains the mechanism of the gut-brain connection still isn't there. Harvard PhD candidate Cary Allen-Blevins is researching everything from breast milk to kombucha to better understand the role of probiotics in gut health. This episode is a collaboration between Proof and Veritalk from Harvard's Graduate School for Arts and Sciences. The original version is part of a series on food that Veritalk produced recently. Check it out at: https://gsas.harvard.edu/veritalk*