Doctor's articles Dr John Martin More than 5815 items endorsed by the best medical specialists

Doctor holding an endoscope used for gastrointestinal tests such as a colonoscopy or polypectomy.

By Dr John Martin
09.09.19
Colorectal surgeon

Colon polyps and the polypectomy procedure

Polyps are abnormal growths within the colon that vary in size from a few millimetres to several centimetres. Most of these are not cancerous, but some have the potential to develop into a cancer. Because of this risk, your doctor will very likely recommend that these are removed via a polypectomy. Here gastroenterologist Dr John Martin talks you through all you need to know about polyps and having a polypectomy.

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By Dr John Martin
10.05.19
Gastroenterologist

Capsule endoscopy: how long does it take to pass?

Capsule endoscopy is a technique that allows visualisation of the entire gastrointestinal tract to enable doctors to diagnose conditions such as coeliac disease and inflammation of the gut. Expert gastroenterologist Dr John Martin explains how the procedure works and how long the capsule takes to pass.

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By Dr John Martin
08.01.19
Gastroenterologist

How to relieve symptoms of IBS

The cause of irritable bowel syndrome (IBS) is not entirely understood. In IBS, the gut appears normal, with no inflammation or any abnormal findings on investigation. IBS is sometimes called a “functional” disorder because symptoms are thought to be caused by the way in which the gut works, for example, the passage of food through the gut may be either too slow or too quick. In addition, the gut may be oversensitive to distension by either gas or food content, causing pain or discomfort. The symptoms of IBS may be exacerbated by certain foods or stress. Here to tell us more about IBS and how we can manage it is Dr John Martin.

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By Dr John Martin
23.11.18
Gastroenterologist

What should I know about a colorectal cancer screening?

Colorectal cancer is the second commonest of cancer deaths in the UK, affecting 1 in 18 men and 1 in 20 women. However, the disease is entirely preventable by the early removal of non-cancerous growths (polyps), which are detected through screening tests. Expert gastroenterologist Dr John Martin explains more...