Learn to REVERSE



Cassidy Gundersen, PhD

Featured In

The Book

Curing Crohn's

How A Closet Food Addict Reversed Her IBD

Curing Crohn’s is a story about my quest to heal from a number of diseases including Crohn’s disease, food addiction, and a number of other serious illnesses. I lived a fake lifestyle and lived on fake foods. Because of these things, I became seriously ill at a very young age. My health declined year after year until one day, the doctors told me that I would probably die young based on the list of growing health problems. I could barely make it out of bed each day, and the pains were often unbearable. 

That was when I decided to take my health into my own hands and find a way to get better. I dedicated myself to the world of nutrition and found healing from not only Crohn’s disease, but all the other health problems I had. In this book, I explain my story, lay out the plan I created, and show how you can take control of your own health as well.

Curing Crohn's | ReverseIBD.com


Do It Yourself

Tackle your own health challenges with this comprehensive digital guide to reversing IBD. This is the plan that I used to heal my own Crohn’s disease. This guide is broken down into three phases to walk you through how to heal from IBD. The first phase is a cleanse, and the next two phases will add foods back into the diet gradually. The guide includes all the information you need to get started, troubleshooting tips, meal plan ideas, and more. I partnered with an incredible chef to come up with a recipe book to help you heal with each meal!

Guided Coaching

Need someone to guide you through reversing IBD or IBS? For many years I have worked with individuals to reverse chronic health problems from diabetes, Crohn’s disease, ulcerative colitis, and more! When you work with me, I’ll walk you through the IBD Reversal Diet and help you achieve the results you want. I’ll also teach you the science and research behind why this approach works. In this package you’ll get the IBD Reversal Diet Guide, cookbook, 8 sessions with me, and many more resources to help you maintain your health after healing. 

Have Questions?

IBD Cookbook

IBD Cookbook

Let’s face it, cleansing can be hard. Especially when you can only eat certain kinds of foods. One of the biggest things my clients asked for was a recipe book with IBD friendly meals. So, I partnered with an awesome chef to come up with a cookbook with all kinds of meals to get you through the cleanse! These meals can be used throughout each phase of the cleanse, or you can enjoy them without trying to cleanse or reverse IBD. 

Take Back Your Life In 3 Steps

The IBD Reversal Diet is a low-fat, high-carb, plant-based approach to eating with three main phases


With intestinal issues, one of the most important things to do is to cleanse the body with foods that will heal the intestinal lining. This means that forgoing certain foods for a period of time is necessary to get optimal healing. 


In phase 2, we start adding certain foods back in slowly so that the gut can get used to a heavier digestive load. The focus here is now to provide the body with all the right nutrients it needs to accelerate the healing. 


Maintenance is key to avoid flare-ups long term. In this phase, the focus is on building good habits and continuing to provide the body with the nutrients and right amount of calories the body needs to take care of itself. 

I’m not going to lie, this type of diet is NOT for the faint of heart. But my clients tell me all the time that it is absolutely worth it! Check out what they have to say below!


Cassidy is a dedicated nutritionist that takes one on one time to help with being as healthy as we can. I love how she really cares about each person and wants the best for us. Her program is so beneficial and worth it!



I never thought I could get to where I am at now with my health. Not even close. I was officially diagnosed with Crohn’s disease when I was 21. After Cassidy’s program, I would say I am definitely the healthiest I have ever been. Not only from a superficial standpoint, my hair is thicker, my skin is softer, my joints don’t hurt. I 100% recommend this program to everyone.



These past few months have been the healthiest of my life! I have more energy and mental clarity and I don’t have to worry about being sick all the time.



I can honestly say that I feel better than I have felt in over 10 years… I’m happier than I’ve ever been; I have more energy than I’ve ever had; my body is completely pain free; I have gained all the weight that I lost back; and eating this diet feels like the biggest reward to me. Every single person that has been in my life through this journey continuously comments on how happy and healthy I look these days, and it never gets old hearing it.




Most frequent questions and answers

My coaching program provides you with all the information you’ll need to heal with a dedicated guide to help you through the process. 

I will work with you 1-on-1 to teach you what to do and how to do it. I will also show you how to maintain long-term health with your food and lifestyle choices. 

My clients constantly tell me that this is the best investment they have ever made for themselves. People who follow through on this program typically report more energy, better bowel movements, eliminating flare-ups, and the reduced need for medications. 

The IBD Reversal diet is a low-fat, high-carb, plant-based diet approach. It starts out with very simple, limited foods and then gradually adds in more complex, nourishing foods. 

Health insurance is not accepted at this time. However, HSA or FSA plans will often cover or reimburse the expense. 

Because each individual is different, I can’t make any guarantees about how long it will take to heal. For some, it takes 6 weeks. For others, it can take up to 6 months. Unlike other coaching programs, I’m not going to give up on you. If you want to heal, I’ll stick with you for as long as it takes. You are in control of your health, and I’m here to support you. 

I’m not going to lie to you, this program is pretty tough at first. Many of my clients report having days where they want to quit and give up. But every single one has reported days when they felt the best they ever have. 

My clients will tell you that the end results are absolutely worth it.

This program is for people who want to take their health into their own hands. Most of my clients have already tried many different approaches to heal and weren’t able to find relief. This program will educate and empower you to succeed. 

Yes! This approach can definitely work for individuals experiencing any kind of IBS or IBD-like symptoms.

About Cassidy

Cassidy Gundersen | ReverseIBD.com

Cassidy Gundersen, PhD Health and Nutrition, has educated thousands of individuals across the globe and has been a featured authority in a number of publications and at a variety of events. She has helped hundreds of individuals overcome their individual health challenges through her books, speaking, and coaching on the importance and power of nutrition. 

She is the owner of Spiro Health and Wellness where she coaches individuals with all kinds of health problems and ReverseIBD.com where she focuses on IBS and IBD issues.

Cassidy was once a pageant queen and championship debater but was soon diagnosed with Crohn’s disease, pre-lupus, pre-diabetes, arthritis, and more, not to mention the kidney stones she had every few months since the time she was 13. 

Since creating and following the IBD Reversal Diet, Cassidy has never had another kidney stone and has never had a Crohn’s flare-up. Her blood work came back completely clean. 

Cassidy Gundersen | ReverseIBD.com
Cassidy Gundersen | Mompreneur | ReverseIBD.com

Cassidy’s greatest joy in life is her two kids. If she could do one thing, it would be to spend some time in nature or in the garden with her family. She and her husband own and run multiple businesses focused on health and education. Cassidy enjoys singing, reading, learning, and a good documentary. 

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