6 Causes of IBS that your Doctor is Probably Ignoring

4. IBS Causes (continued)


Yeast Overgrowth

Yeast overgrowth, commonly referred to as Candida, produces symptoms frequently attributed to IBS, including bloating, gas, constipation, and diarrhea. Like SIBO, yeast overgrowth occurs when the natural balance of your gut flora is disrupted, but instead of bacteria, it’s yeast or fungi that multiplies unchecked. Candida can release toxic byproducts into your bloodstream and is a common cause of leaky gut. There are a variety of tests you can use to determine if you have Candida overgrowth, and you can learn more about them in this article.

Because yeast feeds on sugar, the treatment for Candida overgrowth includes a low-carbohydrate diet, anti-fungal supplements specific to yeast, and probiotics to restore your gut’s natural balance. You can treat your yeast overgrowth at home using The Myers Way® Candida Control Program, a complete 30-day program that includes a meal plan, supplement regimen, recipe book, shopping lists, and a guided email series.


Intestinal parasites including Giardia lamblia, Blastocystis hominis, Dientamoeba fragilis, may be a common cause of IBS, and they often are undiagnosed. I routinely screen my IBS patients for intestinal parasites with a comprehensive stool test. But before I help them clear the infection, I assess whether or not the parasite is a) directly harmful, or b) potentially beneficial. While parasites can be the cause of IBS and ulcerative colitis, in Crohn’s disease, certain types of parasites can actually be helpful. It is important to assess your case individually with your functional medicine doctor. If a parasite is contributing to your IBS, there are prescription medications specific to certain species of parasites that can be used. Or, if the species of parasite cannot be identified, I recommend Microb-Clear, which provides a broad spectrum of activity against the most common pathogens present in the human GI tract, while sparing the beneficial gut bacteria.

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Amy Myers, MD is a renowned leader in Functional Medicine and New York Times Bestselling author of The Autoimmune Solution. She received her Doctorate in Medicine from LSU Health Sciences Center and spent 5 years working in emergency medicine before training with the Institute of Functional Medicine. She has helped thousands around the world recover from chronic illness through her dietary based program, The Myers Way, and she has created multiple interactive eBooks and eCourses to guide readers through her revolutionary approach to health. Her blog and website serve as a beacon of hope to the many sufferers of chronic disease and autoimmune conditions. Her book: The Autoimmune Solution, a 30 day program to prevent and reverse the full spectrum of inflammatory symptoms and disease, is now available at all book retailers.