IBS
(Irritable Bowel Syndrome)

What Is Irritable Bowel Syndrome (IBS)?

IBS as it is best known, or Irritable Bowel Syndrome for its full title, can be a very confusing and frustrating condition, despite it being one of the most common. One of the main reasons it can be confusing is because it looks or feels very different for everyone, so the symptoms you have might not be the same as your friend who also has IBS. On the whole though it is generally an uncomfortable condition yet sometimes can feel debilitating with symptoms such as pain, bloating, diarrhoea, gas and constipation. 

The good news is that IBS doesn’t normally cause permanent damage to the intestines, however, it really can have a significant impact on your daily life, affecting everything from your diet, to what clothes you can wear, to the activities you can do as well as your mental wellbeing.

Fortunately, with the right diet and lifestyle plan you can control your symptoms and improve your quality of life no end!

What Causes IBS?

The exact cause of IBS is still not really fully understood. However, there are a number of factors that are believed to be key contributors and these are:

  • Gut-Brain Connection: The gut and brain are really closely linked and communicate closely all the time. Stress, anxiety, or depression or any change or disruption to this can trigger IBS symptoms.
  • Food Sensitivities: Certain foods can cause issues with your digestive system, especially if you have IBS, but the types of food and triggers that cause the issues can vary greatly from person to person.
  • Gut Microbiome Imbalance: An imbalance of the ‘good’ and ‘bad’ bacteria can often play a role in IBS symptoms.
  • Abnormal Gut Motility: In some people, the muscles in the intestines might move food through too quickly or too slowly and this can lead to the symptoms of diarrhoea or constipation.
  • Post-Infectious IBS: Sometimes IBS can be caused by an infection in the gut which can cause ongoing inflammation or end up changing your gut bacteria balance.  Likewise, antibiotic use can also disrupt you gut bacteria.

IBS vs IBD: What's The Difference?

It can be easy to confuse IBS and IBD, after all, there is only one letter different in the names. However, there is a big difference between the two. 

Firstly, although there is only one letter different, they do stand for different things. IBS, as mentioned earlier is short for Irritable Bowel Syndrome while IBD stands for Inflammatory Bowel Disease.

While they both affect the digestive system and can share some similar symptoms they are very different conditions. Although IBS can feel very debilitating and impact life greatly it generally doesn’t cause permanent damage while IBD does cause physical damage to the gut and needs to be taken very seriously. 

Lets take a look at some of the key differences:

IBS (Irritable Bowel Syndrome)

IBD (Inflammatory Bowel Disease)

  • TYPE: A functional disorder, meaning it affects the gut function
  • SYMPTOMS: Bloating, diarrhoea, constipation, stomach pain
  • CAUSE: Unknown, but often linked to stress, diet and gut bacteria
  • TREATMENT: Changes to diet, lifestyle, and stress management
  • TYPE: Chronic inflammatory disease which causes intestinal damage
  • SYMPTOMS: Severe diarrhoea, rectal bleeding, weight loss, fatigue
  • CAUSE: Autoimmune disease, genetic and environmental factors
  • TREATMENT: Medications to manage the condition and sometimes surgery is necessary

If you do ever experience any of the symptoms associated with IBD such as unexplained weight loss, blood in your stool or persistent diarrhoea then you need to visit your doctor to get this investigated further. 

IBS Symptoms

The symptoms of IBS really can vary, and so don’t just dismiss it or worry if your symptoms aren’t the same as somebody elses.

The most common symptoms of IBS include:

  • Abdominal pain or cramping: Often relieved after passing stool
  • Bloating and excess gas: Feeling full or tight in the stomach
  • Diarrhoea, Constipation or both: Some people have one or the other and some will swing between both extremes
  • Mucus in stool: This is a more common symptom but not often discussed
  • Fatigue and difficulty sleeping: IBS can impact your overall energy levels and sleep quality
  • Increased sensitivity to stress and anxiety: The gut and brain are closely linked making IBS worse during times of stress

Some people may also experience symptoms outside of the digestive system, such as headaches, joint pain, and a frequent need to urinate. These symptoms can sometimes be linked to a heightened sensitivity in the nervous system, which plays a key role in how IBS affects the body.

This is why managing stress and overall lifestyle is just as important as diet when it comes to reducing flare-ups of IBS.

How Is IBS Diagnosed?

Unfortunately there is no single way or test to diagnose IBS. In fact, the diagnosis generally comes as a result of ruling out other conditions such as IBD. Diagnosing IBS is generally done by doctors through a combination of symptom history, ruling out other conditions and clinical guidelines.  Here’s a little more information about all of these:

  • Medical History and Symptom Assessment: Your doctor will ask you whether there is any pattern to your symptoms, how long you’ve had them, and whether there are any possible triggers. They may also ask you about your diet, stress levels and any family history of digestive issues.
  • Exclusion of Other Conditions: Since IBS symptoms overlap with other digestive conditions tests are often done to rule out things like IBD, coeliac disease, infections or lactose intolerance. These tests may include blood tests to check for inflammation, stool tests to detect infections or breath tests to look for lactose or fructose intolerances.
  • Rome IV Criteria: This is a guideline that doctors can use to diagnose IBS. According to the criteria, IBS is diagnosed if you experience frequent abdominal pain (at least 1 day a week in the last 3 months), along with at least 2 of the following symptoms: pain related to bowel movements, a change in stool frequency or a change in stool form.
  • Additional Tests: If symptoms are severe or unusual then your doctor will normally refer you for further tests including things such as a colonoscopy, endoscopy, or scans to help rule out structural problems or other serious conditions.
  • Trial of Dietary Changes: If it is suspected that you may have a food intolerance that could be causing your symptoms then it may be recommended that trying an elimination diet such as Low-FODMAP could help to see if the symptoms improve.

Getting an accurate diagnosis is important to be able to ensure you can put in place the right strategies to help ease your symptoms and also rule out anything more serious.

Private Testing - Getting More Answers

Sometimes you still don’t get the answers you want from the general testing available, or even if you have been given a diagnosis of IBS you are still left with lots of questions such as why is this happening and what can I do?

With this in mind there are a number of private testing options available that can help you look at what is going on in more detail covering areas such as what levels of good and bad bacteria you have and if you have any missing or too many of others, they can see if you have any parasites or infections and also look at the integrity of your gut and whether or not you are producing the right amount of things like bile or stomach acid which help you break down you food.

There are a number of different companies available that offer these tests, and for the more detailed and accurate tests you will need to work with a registered Nutritionist.

In the UK the main company I use with clients is Invivo Healthcare who provide a relatively simple to do test but with lots of great detail. You can find out more about it here and if you want to consider one of these tests then please get in touch and I can arrange this for you as part of a nutrition consultation or programme.

IBS Foods - What to Eat and What Avoid?

Diet plays a really critical role in the management of IBS and the severity of the symptoms you might feel. While the individual triggers for IBS symptoms will vary from person to person there are certain foods that are often more likely to cause a flare-up and worsen symptoms, while there are others that more well known to help ease the symptoms and support gut health.

Foods to Eat for IBS

Foods to Avoid for IBS

  • High-fibre but gentle options: Oats, brown rice, quinoa
  • Lean proteins: Chicken, fish, tofu, eggs
  • Low-FODMAP vegetables: Spinach, courgette, carrots, bell peppers
  • Lactose-free dairy or plant-based alternatives: Almond milk, lactose-free yoghurt
  • Fruits that are easier to digest: Bananas, oranges, strawberries, kiwi
  • Healthy fats: Olive oil, flaxseeds, walnuts
  • Fermented foods (in moderation and not for everyone): Kefir, kimchi, sauerkraut
  • Dairy: Milk, soft cheeses, cream
  • High-FODMAP vegetables: Onions, garlic, cauliflower, beans, lentils
  • Fried and processed foods: Fast food, crisps, chips, greasy snacks
  • Caffeinated and alcoholic drinks: Coffee, energy drinks, beer, wine
  • Artificial sweeteners: Sorbitol, xylitol, aspartame
  • Carbonated drinks: Fizzy drinks, sparkling water (can increase bloating)
  • Spicy Foods: Curry, Chilli (can irritate digestive tract)

Will a Low-FODMAP Diet Help?

Low FODMAP diet

A Low-FODMAP diet is often recommended for people with IBS to help manage symptoms. FODMAPs are short-chain carbohydrates that the gut struggles to absorb and these can then lead to bloating, gas, and diarrhoea. Some of the foods high in FODMAPs include onions, garlic, beans, wheat, legumes and certain fruits and avoiding these can help identify individual triggers.

While there is a lot of information on the internet about Low FODMAP diets and what you should and shouldn’t eat, you’ll probably find it quite overwhelming, confusing and often the food lists are different. I would always recommend only following a Low-FODMAP diet while working with a nutritionist. This is because everyone is different and so following a one size fits all approach might not work for you, so you are better off getting tailored advice. Also, you hopefully won’t need to follow this diet really strictly forever. If you work with a nutritionist they can help you eliminate the right foods, repair your gut while you do it, and then help you re-introduce as many foods as possible back into your diet in a safe and controlled way so as to not cause any further issues or symptoms.

Most Common Questions About IBS

IBS (Irritable Bowel Syndrome) is a common problem affecting many people in the UK and is one of the most common conditions I see in my clinic. Here are some of the most common questions I get asked about IBS:

How common is IBS?

It is estimated that around 10 million people in the UK are affected by IBS, making it a common disorder, but not one we often talk about.

Can IBS be cured?

While there is no cure for IBS, symptoms can be managed and reduced through dietary and lifestyle changes, stress management and in some cases, supplements or medications may help.

Does stress affect IBS?

Stress can definitely make IBS symptoms worse. It can influence how food passes through our digestive system and increase sensitivity in our gut. Managing stress through relaxation techniques and exercise prove really helpful in managing your IBS.

Can probiotics help IBS?

Some probiotics may help balance gut bacteria and improve symptoms like bloating and diarrhoea, but the effects can vary and even make some people feel worse. Choosing the right strain is really important so always work with a nutritionist to determine whether probiotics can help you and which ones to take.

Does IBS cause back pain?

Yes, for some people with IBS they can experience back pain, which is often due to bloating, gas, or is referred pain from the gut. While IBS doesn’t directly cause back issues the discomfort from the gut can radiate to the lower back. Alongside this poor posture, tension or stress may also contribute. 

Can IBS cause weight gain or loss?

IBS itself doesn’t cause any changes to your weight, but it is often the dietary changes or restrictions along with the severity of symptoms that can lead to changes and fluctuations in weight.

Does IBS get worse with age?

IBS symptoms can change over time but aging doesn’t necessarily mean your IBS will get worse. Triggers and tolerances can change and evolve over time and some women going through menopause also often report changes in their IBS symptoms.

Is IBS linked to food intolerances?

Many people with IBS have food sensitivities and react to certain foods causing a flare in their symptoms. Lactose and gluten are two of the most common but other foods can be an issues and it is almost always different from person to person. Also, just because you might have an intolerance to a certain food, this is not the same as being allergic.

Should I see a doctor about my IBS?

If you experience persistent or severe symptoms it is important to consult a doctor to rule out any other conditions and receive the correct diagnosis and appropriate advice or management plan.

What are the main symptoms of IBS?

Common symptoms include stomach pain, bloating, excessive gas, and changes to your bowel movements, such as diarrhoea, constipation, or a combination of both.

How Can I Help?

Managing IBS can be really overwhelming, but I can help provide specific advice and guidance just for you.  As a nutritionist I can help you:

  • Identify personal food triggers
  • Create a personalised IBS friendly diet (possibly Low-FODMAP)
  • Help improve your gut health with probiotic and prebiotic recommendations
  • Include lifestyle and stress management techniques to reduce symptoms
  • Arrange private testing and interpret your results and create a specific and targeted plan based on the results
  • Support long-term dietary and lifestyle changes and habits for sustained relief

So if you’re struggling with IBS I can support you to help manage your symptoms and improve your quality of life.

Please get in touch for personalised support for IBS and book a free introductory call to understand how I can help you here.