Jeffrey Salazar
Irritable bowel syndrome (IBS) is a chronic condition that causes uncomfortable abdominal symptoms, including constipation, diarrhea, gas, and bloating. While there is no cure for IBS, certain foods and medications can worsen these symptoms. Dietary fiber, for example, can be beneficial for some people with IBS, but it can also cause issues for others. Additionally, caffeine, dairy products, gluten, and high-fat foods are known to aggravate IBS symptoms. As such, doctors often recommend that people with IBS follow a low FODMAP diet, which limits poorly absorbed, highly gas-forming carbohydrates. While diet plays a significant role in managing IBS, it is not the only factor, and reducing stress and getting adequate sleep are also important considerations.
Characteristics and values table for 'Does poor diet cause IBS'
| Characteristics | Values |
|---|---|
| Symptoms | Constipation, diarrhea, gas, bloating, abdominal pain, changes in bowel habits |
| Foods to avoid | Gluten, dairy, high-fibre foods, sorbitol, caffeine, fried foods, high-fat foods, raw garlic, chocolate, large meals |
| Foods to include | Fruits low in fructose (berries, citrus, bananas), lactose-free milk, gluten-free grains (millet, quinoa), soluble fiber |
| Lifestyle changes | Drink 8-10 drinks of fluid per day, eat smaller meals more frequently, reduce stress, get adequate sleep |
| Treatment | Medication (e.g. Buscopan, peppermint oil), low FODMAP diet, fiber supplements |
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What You'll Learn
Dairy products
Firstly, high-fat dairy products can trigger diarrhoea in some people with IBS. Opting for low-fat or non-fat dairy options may help reduce these symptoms. Additionally, lactose intolerance may be a factor for some individuals with IBS. Milk and other lactose-containing foods, such as cheese and ice cream, can cause gas and bloating in people who are lactose intolerant. However, it is unclear if people with IBS are more likely to have lactose intolerance.
Yogurt is often well-tolerated by people with IBS due to the live cultures that break down lactose, reducing the likelihood of gassy symptoms. Lactose-free milk and dairy alternatives, such as plant-based milk and soy-based cheese, are also available for those who find that dairy triggers their IBS symptoms.
It is worth noting that dairy is not the only culprit when it comes to managing IBS symptoms. High-fructose corn syrup, found in processed foods, sweets, snacks, and soft drinks, can aggravate IBS. Additionally, some healthy foods like apples, pears, and dried fruits are naturally high in fructose, which can trigger similar side effects as undigested lactose.
While dietary adjustments can help manage IBS symptoms, it is not the only solution. Digestive disease experts recommend that patients with IBS focus on reducing stress, getting adequate sleep, and minimising highly refined processed foods. It is also important to remember that everyone's digestion and food triggers are unique, so keeping a food and symptom diary can help identify specific triggers and tailor dietary choices accordingly.
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High-fibre foods
Soluble Fibre
Soluble fibre is found in beans, fruits, oat products, and vegetables. It dissolves in water and turns into a gel-like substance. This type of fibre can help soften hard stools, making them easier to pass. Soluble fibre is also found in whole grains, but these are best enjoyed in gluten-free varieties, such as millet and quinoa, as some people with IBS find that gluten worsens their symptoms.
Insoluble Fibre
Insoluble fibre is found in whole grain products and vegetables. It resists digestion and adds bulk to the stool. However, insoluble fibre may worsen IBS symptoms in some people, so it's important to be cautious with how much of this type of fibre is consumed.
- Potatoes
- Brown rice
- Oats
- Nuts, such as almonds
- Leafy greens
- Fruit skins
- Berries, citrus fruits, and bananas (these are lower in fructose, which can trigger IBS symptoms)
Tips for Increasing Fibre Intake
- The American College of Gastroenterology (ACG) recommends taking fibre supplements, such as psyllium, to help manage IBS symptoms.
- Cooking vegetables can make them easier to digest, so consider roasting or sautéing broccoli and cauliflower.
- If you find that dairy triggers your IBS symptoms, try switching to lactose-free milk or plant-based alternatives.
- Stay hydrated, as this can help with IBS diarrhoea and constipation.
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Gluten
The symptoms of gluten-related disorders, such as diarrhea, constipation, abdominal pain, and bloating, can overlap with those of irritable bowel syndrome (IBS). IBS is a chronic functional gastrointestinal disorder affecting the large intestine, characterized by abdominal pain or discomfort, changes in bowel habits, and bloating.
There is an overlap between IBS and non-celiac gluten sensitivity (NCGS) in terms of symptoms, and some patients may have both conditions. Clinical trials have shown that people with IBS feel better and experience less pain and bloating on a gluten-free diet, not because of the absence of gluten but due to the reduction of certain fermentable sugars called fructans, which are found in gluten-containing grains.
A recent study found that participants with both gluten sensitivity and IBS reported better symptom relief on a low FODMAP diet compared to a gluten-free diet, and only a small percentage of participants had symptoms when gluten was reintroduced. FODMAP stands for fermentable oligosaccharides, disaccharides, monosaccharides, and polyols, which are short-chain carbohydrates that are poorly digested and absorbed in the small intestine.
While gluten ingestion is not necessary to avoid for people with IBS, some doctors recommend trying a gluten-free diet to see if symptoms improve. Whole grain alternatives to gluten include millet, quinoa, and gluten-free oats.
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Caffeine
Irritable bowel syndrome (IBS) is a chronic condition that affects about 10-15% of Americans. It causes unpleasant symptoms such as bloating, gas, abdominal pain, and changes in bowel habits. While there is no cure for IBS, avoiding certain foods and medications may bring some relief.
The relationship between caffeine and IBS is complex and remains a topic of debate. Some studies suggest that caffeine intake is associated with an increased risk of IBS, while others indicate that coffee drinkers have a reduced likelihood of developing the condition. It is important to note that individual tolerance to caffeine varies, and not everyone with IBS will experience symptoms triggered by caffeine. For those who find that caffeine aggravates their IBS, decaffeinated coffee or tea can be a suitable alternative.
In addition to caffeine, there are other dietary factors that may impact IBS symptoms. Dairy products, for example, can cause significant bloating and diarrhoea in some individuals with IBS, although this varies from person to person. High-fat dairy products and fried foods may also be harder to digest and worsen symptoms. Gluten, found in grains, and FODMAPs (a group of short-chain carbohydrates) are other potential triggers that are recommended to be avoided by some doctors.
Overall, while caffeine may be a contributing factor to IBS symptoms for some individuals, it is important to remember that IBS is a complex condition and there is no one-size-fits-all approach to managing it. Working with a healthcare professional to identify specific food triggers and making dietary adjustments accordingly is the best course of action.
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FODMAPs
Irritable bowel syndrome (IBS) is characterised by chronic, relapsing symptoms including lower abdominal pain, discomfort, bloating, wind, distension, and altered bowel habits. While there is no cure for IBS, certain foods and medications can make symptoms worse.
It is worth noting that dietary changes are not the only approach to managing IBS. A combination of dietary changes, medications, and stress management techniques is often the best way to improve symptoms and quality of life.
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Frequently asked questions
Irritable bowel syndrome (IBS) is a chronic condition that causes painful abdominal symptoms such as constipation, diarrhea, gas and bloating.
While a poor diet does not cause IBS, it can worsen the symptoms. It is recommended to avoid foods that are hard to digest such as beans, cabbage, and broccoli.
Dairy products, gluten, and foods high in insoluble fiber are known to worsen IBS symptoms. It is also recommended to avoid caffeine and carbonated drinks.
Foods rich in soluble fiber are known to help with IBS symptoms. Fruits lower in fructose, such as berries, citrus fruits, and bananas, are also a good option.
Apart from dietary changes, making lifestyle changes can help reduce IBS symptoms. This includes reducing stress, getting adequate sleep, and staying hydrated.
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