Why Am I Bloated All The Time? Causes, Tests and When to Worry | Dr Waqas Gaba
Struggling with persistent bloating or a bloated stomach after eating? Consultant Gastroenterologist Dr Waqas Gaba explains the causes, investigations, treatments and warning signs that should not be ignored.
Persistent bloating is commonly caused by IBS, constipation, food intolerances, excess gas production or changes in the gut microbiome. While most cases are not serious, bloating associated with weight loss, rectal bleeding, anaemia, persistent pain or changes in bowel habit should be assessed by a gastroenterologist.
Few digestive symptoms cause as much frustration as persistent bloating.
Many patients tell me they wake up feeling comfortable, only to find their stomach becoming increasingly swollen as the day progresses. Others describe looking several months pregnant by evening despite eating relatively little.
The first question that usually follows is:
“Could this be something serious?”
The reassuring news is that most cases of bloating are caused by common and treatable digestive conditions. However, persistent bloating should never be ignored, particularly if symptoms are new, worsening, or associated with other warning signs.
As a Consultant Gastroenterologist and Hepatologist, I regularly assess patients with bloating, abdominal pain, IBS symptoms, constipation, reflux, liver disease and changes in bowel habit. Understanding what causes bloating and knowing when to seek medical advice can help patients obtain reassurance and appropriate treatment.
Bloating is one of the most common gastrointestinal symptoms worldwide.
Research suggests that up to 30% of adults experience bloating on a regular basis, and it is among the leading reasons for referral to gastroenterology clinics.
Women are affected more commonly than men, although persistent bloating can occur at any age.
Despite how common it is, many people suffer for months or even years before seeking specialist advice.
Bloating refers to a sensation of:
Some patients experience visible abdominal distension, where the abdomen genuinely increases in size.
Others experience discomfort without obvious swelling.
Associated symptoms often include:
IBS is one of the most common causes of bloating.
Typical IBS symptoms include:
Altered bowel habits
Many patients notice symptoms fluctuate according to stress levels, sleep quality and dietary choices.
Constipation is frequently underestimated.
Many patients assume they cannot be constipated because they open their bowels daily.
However, incomplete emptying can still lead to:
Improving bowel regularity often significantly improves symptoms.
Certain foods may trigger bloating, including:
Importantly, not all bloating indicates a true food intolerance.
Restrictive diets should ideally be guided by an experienced healthcare professional.
SIBO occurs when excessive bacteria populate the small intestine.
Common SIBO symptoms include:
Patients often describe becoming bloated within 30 to 60 minutes of meals.
Coeliac disease is an autoimmune condition triggered by gluten.
Symptoms may include:
Blood tests can help identify patients who may require further investigation.
Although most bloating is benign, less common causes include:
These conditions are considerably less common but may require urgent investigation.
This is understandably one of the biggest fears patients have.
The vast majority of patients with bloating do not have cancer.
However, persistent bloating deserves assessment if accompanied by:
Early investigation helps provide reassurance and allows prompt diagnosis when necessary.
Seek medical advice promptly if bloating is associated with:
The appropriate tests depend on your age, symptoms and medical history.
May assess:
Including:
Helpful for assessing:
A camera examination used to assess:
A colonoscopy allows direct examination of the bowel lining and remains one of the most valuable investigations when concerning symptoms are present.
Treatment depends entirely on the underlying cause.
Options may include:
Identifying trigger foods.
Increasing or adjusting fibre intake appropriately.
Improving bowel emptying.
Including lifestyle and dietary interventions.
Where clinically appropriate.
Such as coeliac disease or inflammatory bowel disease.
The most effective treatment begins with establishing the correct diagnosis.
You should consider specialist assessment if:
Many patients are reassured after specialist evaluation, while others finally receive an explanation for symptoms they have struggled with for years.
Common causes include IBS, constipation, food intolerances and SIBO.
Persistent symptoms should be assessed if they continue for several weeks.
Yes. Stress can significantly affect gut function.
Food sensitivities, IBS and SIBO are common causes.
Usually not, but concerning symptoms should be investigated.
Visible enlargement of the abdomen.
Beans, onions, garlic, dairy and carbonated drinks.
Yes.
Yes.
No.
Excess bacteria within the small intestine.
Sometimes, depending on symptoms and risk factors.
Yes, particularly if fluid accumulates in the abdomen.
Yes, although most bloating is not caused by cancer.
Tests for anaemia, coeliac disease, inflammation and liver disease.
Women tend to report bloating more frequently.
Yes.
A gastroenterologist.
If symptoms are persistent, worsening or associated with red flags.
Yes, in many cases symptoms improve significantly once the cause is identified.
Dr Waqas Gaba is a UK-trained Consultant Gastroenterologist and Hepatologist with dual accreditation in Gastroenterology, Hepatology and General Internal Medicine. He provides specialist assessment of bloating, abdominal pain, IBS, reflux, liver disease and changes in bowel habit, with a focus on delivering personalised, evidence-based care.
