Colorectal Cancer

Colorectal cancers usually have no known cause. The only risk factor associated with lifestyle is probably diet: one that is high in animal fat and protein while low in fibre (fruit and vegetables). Other factors may be obesity, lack of exercise, smoking, alcohol and hereditary.

A person with a parent, brother or sister diagnosed with colorectal cancer under the age of 45, or with several close family members with the disease is considered at higher risk of having the same disease.



  • Blood (appearing bright red or dark) or mucus in the stool

  • A change in bowel habits that lasts for more than two weeks (such as recurring constipation or diarrhoea, pencil thin stools or not being able to completely empty the bowel)

  • Abdominal pain or discomfort (bloating or cramps)

  • Unintended weight loss

  • Tiredness and weakness


Reduce your risks     

  • Consume more vegetables and fruits

  • Lessen intake of red meat, high-fat and processed food

  • Avoid excessive drinking of alcohol

For more cancer-related information and support, please visit the Hong Kong Cancer Fund website or contact Hong Kong Cancer Fund free enquiry hotline: (852) 3656 0800


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Source: Hong Kong Cancer Fund


The information on this page is for reference only. It is not intended to constitute a recommendation, and it is not intended as a substitute for professional advice. You should not act on any information on this page without seeking specific professional advice.