Navigating the Low FODMAP Diet: A Guide to Gut Health

June 23, 2023

Sophie Bebeau

If you’ve been living with digestive issues like IBS, you know just how truly crappy (pun intended) the debilitating symptoms can be. Bloating, indigestion, cramping, constipation, diarrhea…most of us would try just about anything to feel better in the face of these symptoms. If you’ve tried all kinds of diets and remedies, hoping they would offer relief with no success, you’re not alone. In fact, a new survey from the American Gastroenterological Association found that nearly 40% of all Americans have had their daily lives disrupted by digestive problems.

While talking to your doctor is always a great first line of defense when you’re experiencing any chronic health conditions, there’s also one tried-and-true dietary approach that medical professionals and dietitians have been recommending to individuals with IBS and other digestive issues for years.

This dietary approach is called the low FODMAP diet. You may have heard of it before, as it has gained significant attention in recent years for its potential to alleviate digestive symptoms, particularly in individuals with conditions such as irritable bowel syndrome (IBS) and other gastrointestinal disorders.

In this guide, we'll take you on a journey through the intricacies of the low FODMAP diet. We'll explain what FODMAPs are, how they can affect your digestive system, and why adopting a low FODMAP lifestyle might be beneficial for you. We'll delve into the process of starting the diet, including the elimination phase, where high-FODMAP foods are temporarily removed, as well as the crucial reintroduction phase to identify trigger foods specific to your body.

It's important to note that while this guide will provide you with valuable insights and tips, it is always advisable to consult with a healthcare professional or a registered dietitian before making any significant changes to your diet. They can offer personalized guidance tailored to your specific needs and medical history.

What is a FODMAP?

FODMAP is an acronym for a collection of short-chain carbohydrates and sugar alcohols that are commonly found in certain foods–Fermentable, Oligo-, Di-, Monosaccharides And Polyols. These are types of carbohydrates that are found in many different foods, such as wheat, garlic, onions, legumes, and dairy products. While these carbohydrates are normally somewhat beneficial for us, they can cause gut issues in some individuals who are sensitive to them.

Fermentable Oligosaccharides: These include fructans and galacto-oligosaccharides (GOS). Fructans are commonly found in wheat, rye, barley, onions, garlic, and some fruits and vegetables. GOS is present in legumes and certain types of beans.

Disaccharides: The disaccharide lactose, which is primarily found in dairy products, is the main component of this group. Lactose intolerance occurs when the body lacks sufficient lactase, the enzyme needed to break down lactose.

Monosaccharides: The monosaccharide fructose, found in honey, certain fruits, and high-fructose corn syrup, is a part of this group. When consumed in excess of glucose, fructose can be challenging for some individuals to absorb.

Polyols: Polyols, also known as sugar alcohols, include sorbitol, mannitol, xylitol, and others. These compounds are found naturally in some fruits and vegetables and are also used as artificial sweeteners in certain products.

How do FODMAPs affect digestion?

For individuals with a sensitive gut, consuming high-FODMAP foods can lead to various digestive symptoms. FODMAPs have osmotic properties, meaning they draw water into the intestines, potentially causing diarrhea. They are also rapidly fermented by bacteria in the gut, leading to the production of gas, which can cause bloating, flatulence, and abdominal discomfort.

Common high-FODMAP foods

It's essential to be aware of the foods that are high in FODMAPs to effectively manage your diet. Some common examples of high-FODMAP foods include:

  • Fructans: Wheat, rye, barley, onions, garlic, inulin, and certain fruits and vegetables like asparagus and artichokes.
  • GOS: Legumes such as lentils, chickpeas, and kidney beans.
  • Lactose: Milk, yogurt, soft cheeses, and ice cream.
  • Fructose: Honey, apples, pears, mangoes, and high-fructose corn syrup.
  • Polyols: Certain fruits like apples, pears, peaches, and plums, as well as artificial sweeteners like sorbitol, mannitol, and xylitol.

What is a low FODMAP diet?

The Low FODMAP diet is a restrictive elimination diet designed to identify which FODMAPs are causing gut troubles in an individual. The diet is typically split into two stages. Firstly, you eliminate all high FODMAP foods from your diet for around 4-8 weeks. Once the symptoms improve, you can then start slowly reintroducing specific FODMAP groups back into your diet. This phase is designed to help you determine which FODMAPs are the culprits behind your digestive issues.

What are the benefits of a low FODMAP diet?

While there are some major benefits of a low FODMAP diet, it's important to note that the low FODMAP diet is not suitable for everyone, and it should always be undertaken under the guidance of a healthcare professional or registered dietitian. These experts can provide personalized advice, monitor nutritional adequacy, and ensure that the diet is implemented safely and effectively.

Symptom Relief

One of the primary advantages of the low FODMAP diet is its ability to reduce or even eliminate troublesome digestive symptoms. Many individuals with IBS experience symptoms like bloating, gas, abdominal pain, diarrhea, and constipation. By avoiding high-FODMAP foods that can trigger these symptoms, individuals often find relief and experience a significant improvement in their overall well-being.

Individualized Approach

The low FODMAP diet takes into account the unique dietary triggers and sensitivities of each individual. By following the elimination phase, during which high-FODMAP foods are temporarily removed from the diet, and subsequently reintroducing specific FODMAP groups, individuals can identify their personal trigger foods. This personalized approach empowers individuals to create a diet that suits their specific needs and helps them manage their symptoms more effectively.

Improved Quality of Life

Living with chronic digestive symptoms can significantly impact an individual's quality of life. The constant discomfort, uncertainty, and disruption to daily activities can be physically and emotionally draining. By implementing a low FODMAP diet and experiencing symptom relief, individuals often report an improvement in their overall quality of life. They can enjoy meals without fear of discomfort, engage in social activities without anxiety, and regain control over their digestive health. There are other quality-of-life side effects you may notice too! For example, some individuals notice clearer skin, increased energy levels, and improved mental clarity as well.

Nutritional Balance

While the low FODMAP diet restricts certain foods, it is not intended to be a long-term diet. The elimination phase is followed by the reintroduction phase, during which individuals systematically reintroduce specific FODMAP groups to identify their personal tolerances. This process ensures that individuals can include as many foods as possible while still managing their symptoms. With the guidance of a healthcare professional or registered dietitian, individuals can maintain a nutritionally balanced diet and avoid unnecessary dietary restrictions.

Empowerment and Self-Awareness

By embracing the low FODMAP diet, individuals become more attuned to their body's responses and develop a deeper understanding of how certain foods impact their digestive system. This self-awareness enables them to make informed choices about their diet and take an active role in managing their gut health. The knowledge gained through the low FODMAP journey empowers individuals to advocate for their well-being and communicate effectively with healthcare professionals and dietitians.

Getting started with the low FODMAP diet

Embarking on the low FODMAP diet may seem daunting at first, but with the right guidance and strategies, you can successfully navigate this dietary approach and experience relief from digestive symptoms. Let's explore the practical steps to get started with the low FODMAP diet.

1. Consult a Healthcare Professional or Registered Dietitian

Before initiating any significant dietary changes, it's crucial to seek guidance from a healthcare professional or a registered dietitian experienced in the low FODMAP diet. They can evaluate your specific health needs, provide personalized advice, and ensure that the diet is suitable for you. Their expertise will help you understand the diet's intricacies, set realistic expectations, and tailor the approach to your unique circumstances. At Western, you can make an appointment to talk to our registered dietitian, Tad Taggart. Learn more about scheduling an appointment with Tad here.

2. Educate Yourself about FODMAPs

Understanding the concept of FODMAPs and familiarizing yourself with high and low FODMAP foods is essential. Read credible resources, consult reliable websites, or refer to reputable books that explain FODMAPs and provide comprehensive food lists. This knowledge will empower you to make informed choices when planning your meals and grocery shopping.

3. Start with the Elimination Phase

The first phase of the low FODMAP diet is the elimination phase. During this stage, you'll temporarily remove all high-FODMAP foods from your diet for a specific duration, typically 2 to 6 weeks. This allows your digestive system to settle and provides a baseline to assess your symptoms.

During this phase, focus on consuming low FODMAP foods that provide essential nutrients while avoiding potential triggers. Opt for foods such as rice, quinoa, carrots, spinach, chicken, tofu, and lactose-free dairy alternatives. It's crucial to ensure you're still consuming a nutritionally balanced diet during this phase. Working with a dietitian can provide valuable guidance in creating a meal plan that meets your nutritional needs.

Maintaining a detailed food and symptom diary throughout the elimination phase is also immensely helpful. Record the foods you eat, the portion sizes, and any symptoms or changes you experience. This diary serves as a valuable reference for assessing your progress and identifying potential trigger foods once you enter the reintroduction phase.

4. Gradually Reintroduce FODMAPs

After the elimination phase, you'll enter the reintroduction phase. This stage involves systematically reintroducing specific FODMAP groups, one at a time, in measured amounts, to identify your personal tolerance levels. The goal is to determine which FODMAPs trigger symptoms for you, allowing you to personalize your diet more effectively.

Follow a structured reintroduction plan introduced by your healthcare professional or dietitian, and monitor your body's responses. Keep track of symptoms and note which FODMAPs may cause discomfort. This information will guide you in creating a customized and sustainable long-term diet that minimizes symptoms while maximizing food variety.


Navigating the low FODMAP diet can be easier with the support of others who are on a similar journey. Join online communities, forums, or support groups where you can connect with individuals facing similar challenges. These platforms provide a space to share experiences, gather recipe ideas, and receive support and encouragement along the way.

Building a sustainable low FODMAP lifestyle

Transitioning to a low FODMAP lifestyle doesn't have to be a temporary fix. With the right approach and mindset, you can create a sustainable and enjoyable way of eating that supports your gut health in the long term without feeling restrictive. Here are some key strategies for building a sustainable low FODMAP lifestyle:

Embrace Personalization

Recognize that the low FODMAP diet is not a one-size-fits-all approach. It's essential to personalize the diet based on your specific tolerances and preferences. Through the reintroduction phase, you'll gain insights into which FODMAPs you can tolerate in moderation. This knowledge allows you to reintroduce a wider range of foods into your diet, enhancing variety and enjoyment.

Experiment with Recipe Modifications

Adapting your favorite recipes to fit the low FODMAP guidelines can open up a world of culinary possibilities. Experiment with ingredient substitutions and explore low FODMAP alternatives for high FODMAP ingredients. For example, use garlic-infused oil instead of garlic cloves or swap wheat-based pasta for gluten-free alternatives. With creativity and a willingness to try new things, you can still enjoy delicious meals while keeping your gut happy.

Focus on Whole, Unprocessed Foods

Incorporating whole, unprocessed foods into your low FODMAP lifestyle can provide a solid foundation for optimal nutrition. Emphasize fresh fruits, vegetables, lean proteins, and whole grains that are naturally low in FODMAPs. These foods offer essential vitamins, minerals, and fiber while minimizing the intake of potential trigger ingredients.

Prioritize Gut-Friendly Habits

Remember that the low FODMAP diet is just one aspect of supporting your gut health. Incorporate other gut-friendly habits into your lifestyle to enhance overall well-being. Prioritize regular exercise, stay hydrated, practice stress management techniques, and ensure adequate sleep. These factors play a vital role in maintaining a healthy digestive system and can complement the benefits of the low FODMAP diet.

Stay Informed and Flexible

The field of FODMAP research is evolving, and new information continues to emerge. Stay informed about updates, research findings, and advancements in the field. It's important to remain flexible and open to adjusting your approach based on new evidence or recommendations from healthcare professionals or dietitians. Your journey towards optimal gut health is an ongoing process, and staying informed ensures you are making the most informed choices.

Seek Professional Guidance as Needed

Throughout your low FODMAP journey, remember the importance of seeking professional guidance when necessary. If you experience challenges, uncertainties, or changes in your symptoms, consult with a healthcare professional or registered dietitian. They can provide guidance, address concerns, and help you navigate any roadblocks that may arise.

Need help getting started?

Building a sustainable low FODMAP lifestyle can be tough at first. But with patience, self-discovery, and ongoing support, you can create a way of eating that supports your gut health while allowing you to savor delicious meals and live life to the fullest.

If you struggle with digestion issues and want to explore a low FODMAP diet (or alternatives) with an expert, schedule an appointment with Western’s registered dietitian, Tad Taggart, today.

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