Do gluten-free diets help to provide symptom relief for Irritable Bowel Syndrome?

Do gluten-free diets help to provide symptom relief for Irritable Bowel Syndrome?

Many people with Irritable Bowel Syndrome (IBS) misinterpret gluten as the culprit. Their symptoms manifest themselves as a result of eating wheat products. When you look at the chemical structure, there are two components that can cause trouble. The protein (ie. gluten) and/or the carbohydrate (ie. FODMAPs). It can be difficult to decipher which part of wheat is causing your symptoms. And many IBS individuals misdiagnose themselves with non-coeliac gluten sensitivity (NCGS). They assume that their gut is reacting to gluten, rather than to FODMAPs.

Why IBS and celiac disease aren’t the same

The symptoms of IBS and celiac are very similar. The mechanisms in the intestine behind the symptoms are very different.

When you have IBS and eat wheat, your body might react to fructan, a carbohydrate and FODMAP. FODMAP is the abbreviation for “fermentable oligo-, di-, mono-saccharides and polyols”. This is a group of carbohydrates that aren’t digested or absorbed in the intestines. Your microflora produces gas when it ferments FODMAP's which inhibits gut movement. Due to lower motility, all the undigested FODMAP's attract excess amounts of water. This is a downward spiral, and all the extra water and gas in your colon cause it to expand and stretch. This is what causes the symptoms of pain, bloating, diarrhea, constipation and gas.

When you have celiac disease eat wheat, your body has an immune response to gluten, the protein. Your body identifies the protein as a dangerous invader and fires off an immune reaction. It mobiles it's defense mechanism and in that process attacks your own cells. It damages the intestinal wall in the process. This leads to gastrointestinal symptoms and malabsorption of other nutrients. The consequences can also be severe in the long run, such as osteoporosis and infertility.  

Products that contain gluten & FODMAPs


Low FODMAP vs. Gluten-Free Diets

The low FODMAP diet and gluten free are two different types of medical diets. A gluten-free diet restricts gluten intake on a daily basis. It's for people with celiac disease, gluten-sensitivity or dermatitis herpetiformis (skin disorder ).

The low FODMAP diet limits the intake of short carbohydrates, among which is fructan. This medial diet is for people with Irritable Bowel Syndrome, GERD and SIBO. When you follow a low FODMAP diet you, you also omit FODMAPs (ie. fructans) from other non-gluten-containing foods. Gluten-free diets fail to remove the real culprits of IBS symptoms, which are FODMAPs. During a gluten-free diet, you could still eat FODMAPs that cause your bloating and pain.

The impact of a gluten-free diets

Gluten-free diets, though on the rise, can also have adverse effects on health.  Adapting an unnecessary gluten-free diet can have negative effects on your health:

Should I go gluten-free?

With the “rising trend” of gluten-free diets in the past decade you might lean towards giving it a go. Understanding your diagnosis before adopting any dietary changes is important for your health.

After diagnosis it's important to work with a dietitian to identify trigger foods. When you make long-term dietary changes, it's crucial to take a look at your vitamin and mineral intake. Depending on your current diet you may need to supplement different micronutrients.

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