What is Colorectal Cancer?
Colorectal cancer is a cancer that develops in the colon or the rectum. These cancers can also be named colon cancer or rectal cancer, depending on where they start.
Note: Colon cancer and rectal cancer are often grouped together because they have many features in common.
Incidence rate: 35 per 100,000 populations (male & female)
Mortality rate: 12.2 per 100,000 populations (male & female)
(Hong Kong Cancer Registry 2020)
Incidence rate: 4.3 per 100,000 populations (male & female)
Mortality rate: 2.5 per 100,000 populations (male & female)
Incidence rate: 5.3 per 100,000 populations (male & female)
Mortality rate: 3.0 per 100,000 populations ((male & female)
Incidence rate: 4.8 per 100,000 populations (male & female)
Mortality rate: 2.8 per 100,000 populations (male & female)
Early stage colorectal cancer may not have any symptoms.
- Blood mixed with feces.
- Mucus in the feces.
- Change in bowel habit (e.g. Passing stool more often than usual, diarrhea alternating with constipation).
- Bloating (stomach feeling full of gas or fluid, that is unpleasant).
- Abdominal (Tummy) pains.
- Generally unwell, tiredness and weight loss.
Modifiable: Mainly related to sedentary lifestyle
- High consumption of red meat and processed meat
- Lack of physical activity
- Being obese
- Excessive alcohol consumption
- Men aged 50 or above
- History of colonic polyps
- Family history of colorectal cancer
If your parent, sibling, or children has colorectal cancer, risk of developing the disease increases 2-3 folds.
- Hereditary bowel diseases
- Prolonged history of inflammation of the bowel
Please note: Having above risk factor does not mean that you must have colorectal cancer – it only means that your risk of developing colorectal cancer may be higher than average and you should seek further medical advice from your doctor.
- Eat high fiber diet such as, vegetables, fruits, whole grain, etc
- Reduce consumption of red meat
- Do regular exercise (30 minutes every day)
- Maintain a healthy body weight
- Reduce alcohol intake
- Do not smoke