{"id":9331,"date":"2026-11-06T09:59:18","date_gmt":"2026-11-06T09:59:18","guid":{"rendered":"https:\/\/harmonygutandliver.com\/blogs\/?p=9331"},"modified":"2026-11-06T10:31:59","modified_gmt":"2026-11-06T10:31:59","slug":"private-gastroenterologist-milton-keynes","status":"publish","type":"post","link":"https:\/\/harmonygutandliver.com\/blogs\/private-gastroenterologist-milton-keynes\/","title":{"rendered":"Private gastroenterologist in Milton Keynes: when should you see one?"},"content":{"rendered":"\t\t
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Patients usually arrange a gastroenterology appointment after symptoms have continued for some time, or when the treatment they have tried has not helped enough. Reflux may keep returning despite omeprazole, bloating may be present most evenings, or the bowel habit may have changed and not settled. Some patients have already had blood tests, scans or endoscopy but remain uncertain about what the results mean or what should happen next.<\/span><\/p>

A consultation allows the symptoms, previous results and response to treatment to be considered together. Further investigation may be needed, although in many cases the more useful next step is to review the diagnosis, adjust treatment or deal with a contributing problem such as constipation. Tests are most helpful when there is a clear reason for arranging them.<\/span><\/p>

Online information and AI tools can describe the possible causes of a symptom. They cannot examine a patient, review the quality and timing of previous investigations or decide whether a particular result is reassuring enough for that individual. Those decisions depend on the full clinical picture.<\/span><\/p>

Symptoms that may need a gastroenterology review<\/b><\/h3>

Reflux or indigestion that continues despite omeprazole is a common reason for referral. The dose, timing and duration of treatment may need reviewing, and occasionally the symptoms have another explanation. Difficulty swallowing, persistent vomiting, iron-deficiency anaemia or unexplained weight loss would usually make further investigation more pressing.<\/span><\/p>

Bloating is also common and is frequently attributed to food intolerance before other causes have been considered. Constipation may contribute even when the bowels open daily. Coeliac disease, SIBO, carbohydrate intolerance, medicines and increased gut sensitivity may also be relevant. Extensive dietary restriction can make eating increasingly difficult and may not improve the symptoms.<\/span><\/p>

For diarrhoea or a change in bowel habit, the pattern is useful. Symptoms during the night, bleeding, urgency, weight loss and the medicines being taken can alter the assessment. IBS is common, but coeliac disease, infection, inflammation, bile acid diarrhoea and microscopic colitis can present in a similar way and may require specific tests.<\/span><\/p>

Abnormal liver blood tests and fatty liver are other frequent reasons for an appointment. The assessment may involve looking for metabolic, alcohol-related, viral, autoimmune or medication-related causes and deciding whether there is any concern about liver fibrosis. Gallstones, recurrent upper abdominal pain, pancreatitis and findings involving the pancreas or bile ducts require a different approach.<\/span><\/p>

A second opinion can be useful when investigations have been carried out at different times, the diagnosis remains uncertain or the patient has been given a diagnosis such as IBS without understanding how it was reached.<\/span><\/p>

When to consider a breath test<\/b><\/h3>

Patients asking about breath tests have often lived with bloating, excess wind, abdominal discomfort, diarrhoea or constipation for months. Many have already changed their diet, tried probiotics or removed several foods. Some have been told that the symptoms are probably irritable bowel syndrome, while others have read about SIBO and want to know whether a test will finally explain what has been happening.<\/span><\/p>

In my practice, <\/span>breath testing<\/span><\/a> is most useful when the symptoms, medical history and previous investigations give a reasonable reason to suspect small intestinal bacterial overgrowth, intestinal methanogen overgrowth or difficulty absorbing a particular carbohydrate. The same symptoms can occur with constipation, coeliac disease, IBS, medication effects and several other digestive problems, so the first question is what the test is expected to clarify.<\/span><\/p>

What does a hydrogen and methane breath test measure?<\/b><\/h3>

The test measures gases produced when microbes in the gut ferment a test sugar. A baseline breath sample is taken first. You then drink a measured solution, usually glucose or lactulose when testing for SIBO, and provide further breath samples at set intervals.<\/span><\/p>

Hydrogen is produced mainly by bacteria. Methane is produced by methanogens, which are organisms from a different biological group called archaea. This distinction is useful because a hydrogen rise is more commonly associated with diarrhoea and excess gas, while persistent methane production is often seen with constipation and slower bowel transit. The preferred term for the latter is intestinal methanogen overgrowth, or IMO.<\/span><\/p>

The pattern and timing of the gas rise are interpreted alongside the substrate used, the baseline reading, the quality of the preparation and the symptoms. A single number rarely tells the whole story.<\/span><\/p>

Which digestive problems can breath tests investigate?<\/b><\/h3>

Different breath tests answer different questions. Glucose or lactulose hydrogen and methane tests are used when SIBO or IMO is suspected. Lactose and fructose breath tests assess whether those sugars are being absorbed properly. These are separate tests and one cannot be inferred from another.<\/span><\/p>

Breath testing is more likely to be useful when there is:<\/span><\/p>