Will Bulsiewicz
William John Bulsiewicz, better known as Dr. B., is an American board-certified gastroenterologist, author, and advocate for the exploration of the relationship between the gut microbiome, dietary fiber, and plant-based nutrition. He is also an Adjunct Assistant Professor of Medicine at the Emory University School of Medicine.
Early life and education
Bulsiewicz was raised in "a Jesuit-educated family." He studied chemistry at Vanderbilt University and graduated in 2002.Although originally planning to study pediatrics, Bulsiewicz decided in 2005 to switch fields, and graduated from Georgetown University School of Medicine in 2006 with a specialization in gastroenterology. He then received a master's degree in Clinical Investigation from Northwestern University in 2010; and a certificate in plant-based nutrition from eCornell.
Career
From 2006 to 2009, Bulsiewicz completed his internship and residency at McGaw Medical Center of Northwestern University. Next, he served as chief medical resident in internal medicine from 2009-2010, and from 2010 to 2014 he was a Gastroenterology Fellow at UNC Medical Center. During this time, he also received a grant from the National Institutes of Health for a one year epidemiology fellowship at the UNC Gillings School of Global Public Health.Bulsiewicz is board-certified in gastroenterology and internal medicine, and worked for many years as a gastroenterologist in South Carolina medical centers. He is currently the U.S. Medical Director for Zoe.
Dietary fiber and gut health
Bulsiewicz's research and advocacy centers on the relationship between dietary fiber, the gut microbiome, and plant-based nutrition. He argues that the populations in the Blue Zones consume predominantly fiber-rich plant-based diets, stating, "if you look at the healthiest populations on the planet in modern times, they're in the five blue zones, and all five blue zones are 90 percent plant based. So, they are not necessarily vegan, but they are plant-predominant in a way where the meat is not the centerpiece. The plant is the centerpiece. The meat is the side show." He also advocates for the consumption of plant-based fermented foods for better health.Publications
In addition to academic scholarship, he is the author of three books: Fiber Fueled, The Fiber Fueled Cookbook Inspiring Plant-Based Recipes to Turbocharge Your Health, and Plant Powered Plus: Activate the Power of Your Gut to Tame Inflammation and Reclaim Your Health.BooksPlant Powered Plus: Activate the Power of Your Gut to Tame Inflammation and Reclaim Your Health. Avery, 2026..The Fiber Fueled Cookbook: Inspiring Plant-Based Recipes to Turbocharge Your Health. Avery, 2022..Fiber Fueled: The Plant-Based Gut Health Program for Losing Weight, Restoring Your Health, and Optimizing Your Microbiome. Avery, 2020..
Introductions
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