Do you need plant fiber for a healthy gut? With Lucy Mailing, PhD

Heart & Soil is now a reality! This is my passion company founded to help a few million more people reclaim their ancestral birthright to radical health through nose to tail nutrition. We are making grass fed, grass finished desiccated organ capsules from regenerative farms in New Zealand. Check us out at: 

The second edition of The Carnivore Code is now live in print, ebook, and audiobook formats! to order! 

Lucy’s Bio:

Lucy Mailing, PhD received her Bachelor’s in Biology from Kalamazoo College and her PhD in Nutritional Sciences from the University of Illinois, where her dissertation research focused on the effects of diet and exercise on the gut microbiome in states of health and disease. Lucy has authored several peer-reviewed journal articles related to the microbiome and health and was named an Emerging Leader in Nutritional Sciences by the American Society for Nutrition in 2017. Lucy has also served as staff research associate for the Kresser Institute for Functional and Evolutionary Medicine since 2015.

Lucy is the founder and sole author of NextGen Medicine, a site dedicated to evidence-based articles about the microbiome, gut and skin health, and nutrition. She is regularly invited to speak on gut health around the country and has been recognized as one of the most trusted experts in the integrative health space. Lucy plans to continue her academic training and begin a postdoc in 2020 after a gap year dedicated to NextGen Medicine.

Time Stamps:

0:12:07Podcast starts0:12:41Lucy Mailing's story0:14:13How exercise affects the microbiome0:15:34Lucy breaks down the microbiome0:25:15Mapping your biodiversity0:28:56Alpha diversity vs Beta diversity0:31:08Medication's effect on biodiversity0:32:38Seasonal diets improve biodiversity0:37:21Fiber! Do we need it?0:43:53Diet rapidly and reproducibly alters the human gut microbiome0:46:02How Lucy healed her eczema0:50:01Selecting the least toxic plant foods0:52:19Akkermansia0:55:19What makes a healthy microbiome?0:58:43The root causes of small intestinal dysbiosis1:02:59Bacteria-lectin interactions in phytohemagglutinin-induced bacterial overgrowth of the small intestine's link to proteobacteria overgrowth1:04:24  A dietary fiber-deprived gut microbiota degrades the colonic mucus barrier and enhances pathogen susceptibility low fiber diets degrade the gut's mucosal layer?1:06:33Fermentation of animal components in strict carnivores: A comparative study with cheetah fecal inoculum flexibility on a carnivore diet1:11:10How to fix a broken gut1:26:32Stress, community, and gut health1:28:37Where to find Lucy Mailing1:29:39Lucy's radical scuba dive

Heart & Soil: 

@heartandsoilsupplements on Instagram

Nutrisense (Continuous Glucose Monitor- CGM):, use the code CarnivoreMD for 20$ off. 

BluBlox: use the code CarnivoreMD for 15% off your order

White Oak Pastures: Use the code CARNIVOREMD at for 10% off your first order!

Lets Get Checked: 20% off your order at 


To subscribe to my newsletter visit:

My contact information:




Instagram: @carnivoremd



back to podcasts