10 Causes of Irritable Bowel Syndrome @mebykatie
gut health

10 Causes of Irritable Bowel Syndrome (IBS)

May 10, 2025

Irritable Bowel Syndrome (IBS) is a common digestive disorder that affects the large intestine. It can cause abdominal pain, bloating, diarrhea, and constipation. IBS is often triggered by different factors that can disrupt the normal function of the gastrointestinal system. As a holistic health coach, I help my clients uncover the root causes of their IBS so we can create a personalized plan to find relief.

 

In this blog, I'll explore the top 10 causes of IBS and simple ways you can start feeling better.

  1. Food intolerances: One of the most common IBS triggers is a reaction to certain foods like dairy, gluten, or FODMAPs (fermentable carbs found in foods like garlic, onions, and beans). An elimination diet can help identify problem foods. I work with clients to slowly reintroduce foods while noting symptoms. Keeping a food journal is invaluable for pinpointing triggers.
  2. Gut infections: Bacterial overgrowth, parasites, and other gut infections are associated with IBS. Antibiotics and contaminated foods or water can throw off the gut's balance of good and bad microbes. I recommend getting tested for gut infections like SIBO and treating any imbalances with herbs or medication. Replenishing healthy gut flora with probiotic foods is also essential.
  3. Stress: Stress impacts digestion and can make IBS symptoms worse. The gut-brain connection is genuine! I teach clients stress management techniques like meditation, yoga, breathing exercises, and progressive muscle relaxation to activate the relaxation response. Reducing stressors in daily life is also vital. Making time for joyful activities can also relieve stress.
  4. Hormonal changes: IBS symptoms fluctuate around the menstrual cycle, indicating a hormonal link. Birth control pills and hormonal therapies can also impact gut function for some. Tracking symptoms and working with a doctor may help identify hormonal triggers. Herbal remedies can provide relief from issues like PMS and menopause.
  5. Nervous system dysfunction: Researchers have found people with IBS can have extra sensitive pain nerves in their gut. Relaxation techniques, specific supplements, and antidepressants can help regulate the nerves and reduce pain signals. Acupuncture and massage therapy also help soothe nerves.
  6. Small intestinal bacterial overgrowth (SIBO): SIBO is an excessive amount of bacteria in the small intestine, causing bloating, diarrhea, and abdominal pain. A breath test can diagnose SIBO and determine the correct antibiotic or herbal treatment. Prokinetics helps improve SIBO by strengthening GI contractions.
  7. Medications: Antibiotics, painkillers, antidepressants, iron supplements, and antacids can negatively impact gut health and contribute to IBS. I advise reviewing medications with a doctor to find alternatives that don't exacerbate symptoms. Supplements like probiotics can counteract medication side effects.
  8. Low fiber diet: Fiber acts like a scrub brush moving things through the intestines. A low-fiber diet allows waste to linger in the colon, contributing to IBS symptoms. I work with clients to slowly increase sources of soluble fiber like oats, nuts, beans, fruits, and vegetables. Staying hydrated helps fiber work.
  9. Sedentary lifestyle: Regular exercise helps reduce IBS symptoms by decreasing stress, stimulating digestion, and supporting gut microbes. I recommend 30 minutes a day of moderate activity like walking, yoga, pilates, or swimming. Start slow if new to exercise and avoid intense workouts.
  10. Psychological factors: Depression, anxiety, trauma, and stress can manifest physically as digestive issues. Counseling, support groups, journaling, or a mental health professional can help treat the mind-body connection. Learning coping strategies lessens the impact of emotions on the gut.

 

In addition to these top 10 causes, there are a few other factors that can contribute to IBS:

  • Food poisoning - Stomach bugs from bacteria or viruses can damage the GI tract and spark IBS.
  • Family history - IBS tends to run in families, indicating a possible genetic component.
  • Sleep disturbances - Lack of sleep negatively affects hormones, immunity, and nervous system function tied to IBS.
  • Smoking, drugs, and alcohol - inflame the intestinal lining and worsen symptoms.
  • Thyroid issues - An under or overactive thyroid slows digestion and causes GI problems.

 

The good news is that simple diet, lifestyle, and mind-body therapies can relieve IBS symptoms.

As a holistic health coach, I partner with clients to identify the root causes and find individualized solutions. My approach focuses on reducing inflammation, restoring gut health, managing stress, and making sustainable diet and lifestyle changes. With some trial and error, most people find an effective IBS treatment plan.

If you're struggling with IBS, I offer a free 30-minute consultation to explore your health goals. I look forward to helping you end digestive distress and improve your quality of life.

 

 

 

 

 

Content Copyright © 2025, MBK Cultivate Skin & Nutrition Wellness   

PERMISSION TO REPRINT: You may use any items from this article in your print, blog, magazine, or electronic newsletter. However, you must include the following paragraph, including a link to www.mebykatie.com.   

"Information courtesy of www.mebykatie.com; Katie Marshall is a certified Medical Esthetician, Acne Specialist, Functional Nutrition Counsellor, Holistic Chef, and Integrative Nutrition Health Coach. Specializing in skin health, gut health, hormone health, and the whole body. The basic premise is that functional nutrition gets to the root of the problem and resolves the actual problem. This differs from conventional medicine, which often prescribes multiple medications to manage symptoms, with little regard for addressing the root cause of the symptoms. Functional nutrition is more personalized, customized, and holistic. My job is to work with your medical team and advocate for you if necessary."   

Health/Medical Disclaimer:   

The content of MBK Cultivate Skin & Nutrition Wellness, either through these social media pages, websites, or any other materials distributed by MBK Cultivate Skin & Nutrition Wellness, is intended to provide helpful and informative material. Please remember that my personal and professional opinions on these social media pages and websites are solely my own. This site offers information on skin, diet, fitness, health, and nutrition, and is designed in good faith for educational purposes only. Care has been taken to confirm the accuracy of the information and describe generally accepted practices. However, the authors, editors, and publishers are not responsible for errors, omissions, or any consequences from the application of the information in these publications and make no warranty, expressed or implied, concerning the currency, completeness, or accuracy of the publication's contents. It would be best not to rely on this information as a substitute, nor does it replace professional medical advice, diagnosis, or treatment.   

I, Katie Marshall, am not a doctor or medical provider and do not provide medical advice. Readers are advised to research and make decisions in partnership with their healthcare provider.   

If you are pregnant, nursing, have a medical condition(s), or take any medication(s), please consult your family physician.   

Always seek the advice of your family physician or other qualified healthcare providers with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay seeking it because of something you read on my social media pages or websites.   

If you have a medical emergency, call your family physician, go to the nearest emergency department, or call 911 immediately. Reliance on any information provided by MBK Cultivate Skin & Nutrition Wellness or Katie Marshall presenting content for publication to these social media pages or websites is solely at your own risk. Administrators and Moderators are not liable for your actions.   

Health Canada & FDA Disclaimer:   

Health Canada or the Food and Drug Administration has not evaluated the advice and statements on this page.   

Join the MBK Healthy Recipe Club

Join Today

Stay connected with news and updates

Join my weekly mailing list to receive the latest news and updates from me.

Don't worry, your information won't be shared.

In accordance with federal regulations (CASL), please only provide your email address if you are consenting to receive future emails from MBK Cultivate Skin & Nutrition Wellness regarding news, coaching, programs and skincare products. You will have the opportunity to unsubscribe at any time and your email address will not be shared or sold.