Frequent bloating can have several causes, and while many are manageable at home, others might need medical attention. We’ll explain the difference between occasional and ongoing bloating, common triggers and simple steps that could help you feel more comfortable.

If you have persistent bloating (you’ve been feeling bloated for three weeks or more, or you feel bloated more than 12 times a month), it’s important to see your GP for medical advice.

What causes bloating?

Bloating – that full and uncomfortable feeling in your tummy – is very common. In fact, nearly 1 in 5 people report bloating once a week. It often happens after eating or drinking certain things, or even just from how we eat. Eating too quickly, sipping fizzy drinks or chewing gum can all make you swallow more air.

For some people, though, bloating can hang around or keep coming back. This can be frustrating and get in the way of day-to-day comfort.

We don’t yet fully understand the complex mechanisms behind bloating, but frequent bloating may be linked to patterns in diet, how your gut digests food, the way your bowels move, hormonal changes or sometimes an underlying medical condition. Let’s take a closer look.

Digestive issues and bloating

Several everyday digestive issues can make bloating an occasional visitor:

• Trapped wind – this happens when gas builds up in the stomach or intestines and can’t pass easily, causing bloating and stomach pain
• Slowed digestion – slower movement of food and gas through your digestive system can leave you feeling full and bloated
• Constipation – if poo moves slowly or is hard to pass, it can stop gas from escaping
• Problems digesting or absorbing certain foods – your body may not absorb or digest some sugars or starchy foods well, which means they travel to your large bowel, where bacteria break them down and produce gas
• Changes in your gut bacteria balance – shifts in the mix of bacteria living in your gut can also mean more gas production

Food intolerances

A food intolerance happens when your body finds it difficult to digest certain foods or ingredients. This can lead to symptoms like bloating, wind, diarrhoea and stomach pain.

Lactose intolerance is the most common example. This is when your body doesn’t produce enough of the enzyme needed to digest lactose, a natural sugar found in milk and dairy products such as cheese and yoghurt.

But lactose isn’t the only trigger. Some people are intolerant to other ingredients too, such as:

• Gluten – found in foods like bread and pasta
• Histamine – present in some foods and drinks, like wine and cheese
• Caffeine – found in coffee, tea and some fizzy drinks
• Alcohol
• Sulphites – used in drinks such as cider, beer and wine
• Salicylates – naturally found in some fruits, vegetables, herbs and spices
• Monosodium glutamate (MSG) – present in cured meats, ripened fruits and savoury foods

If you notice symptoms of a food intolerance that keep coming back, have a chat with your GP to find out what’s going on.

Irritable bowel syndrome (IBS) and bloating

Doctors describe IBS as a problem with the way the gut and brain communicate. The gut is controlled by a network of nerves – but in IBS, this signalling doesn’t work as it should. Those nerves can become extra sensitive to the bowel’s normal movements, which is why everyday sensations can feel uncomfortable and sometimes painful.

Bloating is a common symptom of IBS. Other hallmark signs may include stomach cramps, pain linked to your bowel habits (often easing after a poo) and changes in how often you go or what your stools look like (diarrhoea, constipation or a mix of both). Symptoms can come and go in flare‑ups, may change throughout the day, and often go hand in hand with wind or an urgent need to go.

If this sounds familiar, speak to your GP. They can discuss whether your symptoms may be caused by IBS, and run some tests to rule out other conditions.

Other gastrointestinal disorders

Several other digestive conditions can lead to extra gas or ongoing bloating. Some of these include:

• Coeliac disease
• Chronic (long-term) constipation
• Functional dyspepsia (a type of indigestion)
• Gastro-oesophageal reflux disease (GORD)
• Inflammatory bowel diseases such as Crohn’s disease and colitis
• Gastroparesis (when the nerves controlling the stomach don’t work properly, slowing how food empties from the stomach)

Sometimes, bloating that doesn’t settle or keeps getting worse can be a sign of something more serious, such as bowel cancer and ovarian cancer.  But try not to panic – help is available. If you’re worried about new or persistent bloating or it starts to affect your day-to-day life, speak to your GP.

Hormonal changes and bloating

Women generally report bloating more often than men. Bloating is associated with:

• Premenstrual syndrome (PMS) – many people feel more bloated in the days or weeks leading up to their period, and some also notice it during their period
• Pregnancy – hormonal changes during pregnancy can make bloating, heartburn and wind common
• Menopause – during menopause, many women experience symptoms relating to digestive health, including bloating, abdominal pain and changes in bowel movements

When to see a doctor about bloating

If your symptoms are persistent, getting in the way of everyday life or you’re simply worried, it's important to seek medical advice.

See your GP if:

• You’ve been feeling bloated for three weeks or more
• You feel bloated regularly (more than 12 times a month)
• You’ve tried changing your diet, but keep feeling bloated
• Boating makes it difficult to move around or do daily activities

You should also speak to a doctor if bloating comes with other symptoms, such as unexplained weight loss, being sick, a change in your bowel habits, blood in your poo, abdominal pain or a swelling or lump in your tummy.

If you’re ever unsure, it’s always best to check in.

Most of the time, bloated feeling comes from everyday digestive patterns – gas from swallowed air, certain foods, slower bowels, a sensitive gut or even normal hormonal shifts.

The good news? Simple tweaks and over-the-counter medicines can often help you find relief from occasional bloating. Eating mindfully, staying active and drinking plenty of water can all help ease bloating and keep your digestive system happy.

If you have persistent bloating, speak to your GP. Don’t ignore red flags or symptoms that keep returning: a quick chat with a GP can rule out anything serious and help you get back to feeling more like yourself.