Stephen Barrie, ND, PhD

Stephen Barrie, ND, PhD, leads clinical nutrition at Viome Life Sciences, where he directs the strategy that turns molecular insights into personalized dietary guidance.

With over 35 years of experience as a physician, clinical researcher, and entrepreneur, he is one of the founding pioneers of the microbiome field. He founded Genova Diagnostics in 1986 and developed the first clinical intestinal permeability lab test, the first SIBO breath test, and the comprehensive stool analysis — tools still used in functional medicine today. He later spent seven years advising the Chinese Central Government on incorporating functional medicine into its national healthcare system.

He has published in The Lancet, Medical Hypothesis, and other journals, and is the NY Times and LA Times bestselling author of 7 Day Detox Miracle and Energize Your Life. His work has been featured in The New York Times, The Wall Street Journal, Forbes, TIME, and CNN.

For Habit, his team's clinical standards shape how we talk about food, digestion, and the habits that support them.