Overview

A functional medicine approach to healing Irritable Bowel Syndrome, from the #1 New York Times bestselling author of Hashimoto’s Protocol You don’t have to accept bloating, cramping, urgency, or pain as your “normal.” When clinical pharmacist Izabella Wentz was first diagnosed with irritable bowel syndrome, she was told her digestion was simply “overly sensitive.” For years, she assumed everyone’s stomach hurt after eating. Like many people, she tried to live with the discomfort, until she discovered there were real, treatable reasons for her symptoms. And the same can be true for you. In this groundbreaking guide, Dr. Wentz shares her signature Root Cause approach to unraveling the mystery of IBS. While conventional medicine may label symptoms as “IBS” and prescribe a medication or two, Wentz reveals how this diagnosis is often a catch-all term that overlooks underlying imbalances, ones that can be identified, addressed, and resolved. For some, the root cause may be an enzyme deficiency. For others, it may be toxic exposures, bacterial overgrowth, food sensitivities, hidden infections and other rarely investigated causes. In this comprehensive and compassionate book, you’ll learn how to uncover the true source of your symptoms and create a personalized healing plan to restore your gut and your life. Inside, you’ll discover how to: ● Understand what normal digestion really looks like ● Identify potential root causes behind IBS symptoms ● Explore testing options—from gluten intolerance and SIBO to enzyme function and triggering infections ● Remove reactive foods and triggers with targeted nutrition strategies ● Restore microbial balance ● Rebuild digestive function with tailored supplements and lifestyle shifts ● Manage symptoms gently while you work toward lasting healing Whether you’ve been struggling with IBS for years or were just diagnosed, this is your invitation to dig deeper, heal smarter, and reclaim your energy, confidence, and well-being—with guidance from one of the world’s leading voices in root cause healing.

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9780593420805

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Reviews

“Dr. Izabella Wentz has written the definitive guide to uncovering and healing the root causes of IBS. For anyone who’s been told their digestive symptoms are ‘just in their head,’ this book offers both validation and transformation. With compassion, clinical precision, and decades of experience in root-cause medicine, Dr. Wentz empowers readers to finally understand why they’re suffering—and how to reclaim their gut health for good.” —MARK HYMAN, MD, New York Times bestselling author of Young Forever and Food Fix “Dr. Wentz combines compassion, science, and functional medicine to demystify IBS and bring hope to millions suffering in silence. This book is a game-changer.” —WILL COLE, FMP, New York Times bestselling author of Gut Feelings and The Inflammation Spectrum “Dr. Izabella Wentz has once again created a resource that’s both empowering and deeply healing. If you’ve been told, ‘it’s just IBS,’ this book will help you dig deeper, uncover the real root causes behind your symptoms, and guide you step-by-step toward lasting relief.” —JOLENE BRIGHTEN, FABNE, MSCP, author of Is This Normal and Beyond the Pill “We’ve normalized daily bloating, urgent bathroom visits, and food fear to the point that countless women suffer in silence, often unknowingly, mistaking real distress for ‘just my sensitive stomach.’ Wentz reframes IBS as solvable with clear, stepwise strategies that respect bioindividuality and finally put women back in charge of their gut, energy, and lives. This functionally minded approach is exactly what many of my patients need and deserve.” —CYNTHIA THURLOW, NP, author of Intermittent Fasting Transformation “As someone who’s been on the front lines of IBS care for over two decades, I know how overwhelming this journey can be. Dr. Wentz offers a clear, compassionate, and science-informed approach that empowers readers to finally get to the root of their digestive struggles. This is a valuable companion for anyone who’s been told, ‘it’s just IBS’—and knows there’s more to the story.” —VINCENT PEDRE, MD, author of Happy Gut and The GutSMART Protocol

Author Information

Izabella Wentz, PharmD, FASCP, is a pioneering clinical pharmacist and bestselling author with a passion for getting to the root of complex health conditions. Dr. Wentz holds advanced certifications in Medication Therapy Management and Diabetes Care. She has consulted on thousands of difficult cases during her career and is known for her ability to translate cutting-edge research into practical, life-changing protocols. Her previous books—Hashimoto’s Protocol, Hashimoto’s Food Pharmacology, and Hashimoto’s Thyroiditis—have helped hundreds of thousands around the world. Dr. Wentz lives in Austin, TX with her husband, Michael, and their children.

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