Irritable bowel syndrome

Irritable bowel syndrome (IBS) is not one disease. It is a group of symptoms that affect the organs that help with digestion, which are the gastrointestinal (GI) tract. Researchers now know that IBS is a problem with the way the gut and brain talk to each other. When the communication network between your intestines and your brain is not working right, it makes the GI tract work wrong. This can make the intestines very sensitive, so they react too strongly to food, stress, or other things that set them off.

IBS is very common. It affects about 10% of people around the world, according to PubMed Central, making it one of the most common gastrointestinal problems seen in clinical practice. Even though it affects a lot of people, the exact cause is still unknown, and there is no cure right now.

Sypmtoms

There are four main types of IBS, based on how hard or soft the stool is: IBS with mostly diarrhoea (IBS-D), IBS with mostly constipation (IBS-C), IBS with mixed bowel habits (IBS-M), and IBS that does not fit into any of these categories. It is important to know what type you have because the treatments and diets that work for one type may not work for another.

Abdominal pain or discomfort is the most common symptom of IBS. Other symptoms include bloating, gas, the feeling of not fully emptying the bowels, mucus in the stool, and feeling unusually full after a small meal. Symptoms tend to come and go, and they can be brought on by certain foods, stress, hormonal changes, or mental health issues. IBS is a disorder that affects the gut-brain axis and has serious negative effects on physical health, mental health, and overall quality of life.

Who is affected?

Anyone can get IBS, but some things make it more likely that you will. Having IBS is more likely if you are a woman, under 40, have a family history of the condition, live with anxiety or depression, or have had a bacterial infection in your gut before. Post-infectious IBS, which happens when symptoms start after a case of gastroenteritis, is a well-known condition that supports the idea that changes in the gut microbiome are a major cause.

Diagnosis

Doctors usually make a diagnosis of IBS based on your symptoms, medical history, and a physical exam. It is safe to diagnose IBS based on the symptoms the patient reports, but everyone should be tested to make sure they do not have coeliac disease, and those with diarrhoea should be checked to make sure they do not have inflammatory bowel disease. PubMed does not recommend routine colonoscopy without alarm symptoms like unexplained weight loss, rectal bleeding, or ongoing severe pain.

Managing IBS

There is no cure for IBS, but most people can learn how to manage it well. The best treatment is one that is made just for you, taking into account your subtype, your triggers, and your way of life.

Food and Lifestyle

Changes to the diet are usually the first thing that is done to help. The low-FODMAP diet, which limits fermentable carbohydrates like some fruits, vegetables, dairy products, and grains, has the most proof that it can help with symptoms. Dietary changes like the low-FODMAP or Mediterranean–low-FODMAP diet lower luminal fermentation and distension, which helps people who are sensitive to these things feel better. MDPI General advice includes eating five to six small meals at the same times every day, drinking plenty of water, cutting back on alcohol and caffeine, and keeping a food diary to find out what foods make you feel bad.

Medication

The main symptoms determine which medicines to use. Laxatives and fibre supplements help with constipation, while antidiarrheal drugs help with diarrhoea. Antispasmodic drugs can help with cramps in the stomach. There are newer drugs that can help with constipation or diarrhoea, and pain-relieving drugs can help with stomach pain if these do not work. Psychological Therapies in PubMed
Psychological therapies can be very helpful for IBS because the gut-brain connection is so important. Cognitive behavioural therapy or hypnotherapy, specifically designed for IBS, can be regarded as PubMed for individuals whose symptoms persist despite alternative interventions. Getting enough sleep and exercising regularly are both important parts of a complete stress management plan.

Future treatments

More and more research is being done on IBS. Scientists are looking into what the gut microbiome does, and probiotics and faecal microbiota transplantation are showing early promise. Researchers have found that a group of drugs known as opioid delta-receptor agonists may help ease IBS symptoms by affecting the central nervous system instead of the intestine directly. This is a potentially exciting new treatment option. A study from around the world has found that differences in the genes that control carbohydrate-active enzymes in humans may affect how people with IBS respond to dietary changes. This opens up the possibility of genetically tailored dietary therapy in the future.

Seeking help

IBS is a long-term condition, but you should not ignore new or changing symptoms. If you have constant pain, unexplained weight loss, rectal bleeding, diarrhoea that gets worse, or a fever, call your doctor right away. If you have severe abdominal pain, bloody or black stools, signs of dehydration, or vomiting that will not stop, you need to go to urgent care right away.

Having IBS is hard, but you are not alone. In 2024, fewer patients say their symptoms are very or extremely bothersome than they did ten years ago. However, 76% of patients still say it is somewhat or very hard to manage their symptoms. Most people with IBS can take meaningful control of their condition with the right mix of dietary strategies, medical treatment, psychological support, and lifestyle changes. Talk to your doctor about any changes to your treatment plan.