The Gut Health Blueprint: A Beginner's Guide to Healing Your Digestive System

Jessica Gleason is a certified functional nutritionist and digestive health educator with over fifteen years of clinical experience helping clients reverse chronic digestive issues, identify food sensitivities, and rebuild their relationship with food from the ground up. She holds a Master of Science in Human Nutrition from the University of Bridgeport and completed advanced training in functional medicine through the Institute for Functional Medicine and the Kresser Institute.

Jessica's own health journey began in her early twenties when a decade of undiagnosed IBS, chronic fatigue, and worsening food intolerances left her feeling like a prisoner in her own body. After conventional medicine offered little more than antacids and elimination diets that never quite worked, she discovered functional nutrition and began the systematic process of healing her own gut—a journey that took over two years but fundamentally changed the course of her life and career. That experience drives everything she teaches today.

She has since worked with more than two thousand clients across private practice, group programs, and corporate wellness initiatives, helping them navigate conditions ranging from GERD and SIBO to ulcerative colitis and autoimmune-driven digestive dysfunction. Her approach is rooted in evidence-based nutrition science but delivered with a deep respect for the real-world challenges of cooking, shopping, eating out, and managing stress while trying to heal. She does not believe in fear-based eating or unnecessarily restrictive protocols.

Jessica is also the creator of The Gut Resiliency Method, a six-phase framework that combines dietary intervention, targeted supplementation, nervous system regulation, and lifestyle design to create lasting digestive health. She lives in Portland, Oregon, where she gardens, ferments vegetables on her kitchen counter, and tests every recipe in her books on her husband and two children, who have learned to stop asking whether a dish is "a recipe or an experiment." She writes regularly at jessicagleasonnutrition.com and hosts the weekly podcast The Resilient Gut.