Bloating is a common digestive symptom that can make your abdomen feel full, tight, swollen or uncomfortable. Some people may also notice that their abdomen appears larger than usual.
Bloating can happen on its own, but it is also commonly experienced alongside other digestive symptoms such as gas, abdominal discomfort, constipation or diarrhoea. For people with irritable bowel syndrome, commonly known as IBS, bloating can be a recurring part of their symptoms.
What does bloating feel like?
Bloating can feel different from one person to another. Common descriptions include:
- A feeling of fullness after eating
- Pressure or tightness in the abdomen
- A swollen or distended stomach
- Increased gas
- Abdominal discomfort
- Feeling unusually full after a meal
The intensity can also vary. Some people experience mild discomfort, while others find bloating one of their most noticeable digestive symptoms.
Bloating and IBS
Bloating is frequently reported by people with IBS. It may occur together with abdominal pain and changes in bowel habits, including constipation, diarrhoea or alternating constipation and diarrhoea.
However, having bloating does not automatically mean that you have IBS. Bloating has many possible causes, and the pattern of symptoms is important when trying to understand what may be happening.
If bloating repeatedly occurs alongside abdominal pain and changes in bowel habits, it may be worth discussing the symptoms with a healthcare professional.
What can cause bloating?
There are many possible reasons for bloating. Sometimes it can be related to normal digestive processes, while in other cases it may be associated with constipation, diet or an underlying digestive condition.
Common factors include:
Eating large meals
A large meal can leave you feeling unusually full and uncomfortable. Eating smaller meals may be more comfortable for some people.
Constipation
When bowel movements become less frequent or stool becomes difficult to pass, this can contribute to abdominal fullness and bloating.
Certain foods
Some foods can cause increased gas or digestive discomfort in certain people. The foods that cause symptoms can vary considerably between individuals.
Fizzy drinks
Carbonated drinks can increase the amount of gas in the digestive system and may contribute to a feeling of bloating in some people.
Changes in fibre intake
Fibre can be important for digestive health, but increasing fibre very quickly can cause additional gas and bloating. A gradual change may be easier for the digestive system to tolerate.
Individual food sensitivities
Some people notice that particular foods are associated with their symptoms. Keeping track of meals and symptoms can sometimes help identify patterns.
Bloating and diet
Diet can be an important consideration when investigating recurring bloating, particularly for people with IBS.
Some people with IBS find that certain carbohydrates are associated with increased digestive symptoms. These include foods containing fermentable carbohydrates known as FODMAPs.
The low FODMAP diet has been studied as an approach for managing IBS symptoms. However, it is not simply a list of foods that everyone with IBS should permanently avoid.
A structured low FODMAP approach generally involves reducing high FODMAP foods for a limited period, followed by a process of reintroducing foods to identify individual tolerances.
Because restrictive diets can make it more difficult to meet nutritional needs, people considering a low FODMAP diet may benefit from working with a qualified dietitian or other appropriate healthcare professional.
What may help with bloating?
The most useful approach depends on what is contributing to the bloating.
For some people, simple changes such as eating more slowly, avoiding very large meals, drinking fewer fizzy drinks or gradually adjusting fibre intake may help.
If constipation is contributing to bloating, addressing constipation may also improve symptoms.
For people with IBS, identifying individual dietary triggers can be useful. However, avoiding large numbers of foods without a clear reason is not necessarily helpful and can make the diet unnecessarily restrictive.
Supplements are another area that people often consider. However, supplements are not automatically suitable for everyone with bloating, and evidence varies considerably between different ingredients and products.
At Vitalaya, we look at individual ingredients and products rather than treating all digestive supplements as equally effective.
When should you speak to a healthcare professional?
Occasional bloating is common, but persistent, severe or unexplained symptoms should not simply be assumed to be IBS.
Speak with a healthcare professional if bloating is persistent, keeps returning without an obvious explanation, or occurs alongside other concerning symptoms.
It is particularly important to seek medical advice if digestive symptoms are new, severe or changing, or if you have symptoms that concern you.
Bloating and supplements
A number of supplements are marketed for bloating, IBS and general digestive health. These include fibre supplements, peppermint oil, probiotics and other ingredients.
The evidence is different for each ingredient, and the quality of individual products can also vary.
For this reason, Vitalaya evaluates supplements by looking at factors such as:
- The available scientific evidence
- The ingredient and formulation
- The symptoms the product is intended to address
- Whether it may be relevant to people with IBS
- Potential concerns or limitations
- Dosage and usage information
- Value compared with alternatives
This helps separate the evidence behind an ingredient from the marketing claims made about a particular product.
Understanding your own symptoms
Bloating can have many possible causes, so identifying a pattern can be more useful than simply looking for one universal solution.
You may find it useful to keep a simple record of what you eat, when bloating occurs, bowel movements and any other symptoms. Over time, this may help you and your healthcare professional identify patterns.
There is no single approach that works for everyone with bloating or IBS. Understanding the symptoms, considering possible triggers and making changes gradually can be a more useful starting point than removing large numbers of foods or taking multiple supplements at once.
Related Vitalaya guides
Explore more of our IBS and digestive health resources:
IBS Guide
Learn about IBS symptoms, IBS types, diet and commonly considered management approaches.
IBS C
Understand the symptoms and considerations associated with IBS where constipation is predominant.
IBS D
Learn more about IBS where diarrhoea is the predominant bowel pattern.
IBS M
Explore IBS where constipation and diarrhoea may alternate.
Digestive Health Supplements
Explore individual ingredients and supplements commonly considered for digestive health and IBS.
Supplement Comparisons
Compare different ingredients and products based on evidence, formulation, suitability and value.
Important information
Vitalaya provides general health information for educational purposes. It is not a substitute for professional medical advice, diagnosis or treatment. If you have persistent, severe or worrying symptoms, speak with a qualified healthcare professional.