A/Prof David van der Poorten
Dr Roslyn Vongsuvanh
  Professor Golo Ahlenstiel
Dr Way Siow & Dr Rishi Sud
Email: admin@sydneynwgastro.com.au
Appointments & Enquiries:  (02) 8711 0160

The Large Intestine

The large intestine, also known as the colon or large bowel, is around 1.5 metres in length starting from the caecum and ending at the anus. Its primary function is to reabsorb water from dietary waste and ultimately excrete it as faecal matter. Recent evidence suggests that the large intestine also plays a vital role in the maintenance of health through its rich population of microbes, called the microbiota. Imbalances in the microbiota are not only responsible for diseases of the intestine, but have been associated with conditions such as diabetes, obesity and heart disease.


Common diseases of the large intestine include:

  • Bowel polyps
  • Colorectal (Bowel) Cancer
  • Inflammatory bowel disease
    • Crohn’s disease
    • Ulcerative Colitis
  • Irritable bowel syndrome ** (all parts of the intestine can be involved)
  • Infections (both acute and chronic)
  • Diverticular disease
  • Constipation
  • Haemorrhoids
  • Anal fissures