Learn about Cancer

Cancer occurs when cells divide uncontrollably. It can start almost anywhere in the human body, which is made up of trillions of cells. These abnormal cells can invade nearby tissues or travel to distant sites by entering the bloodstream or lymphatic system.

Causes of Cancer

Cancer is the result of cells mutating and can be caused by a mix of factors related to one’s environment, lifestyle, and genetics.

Physical Carcinogens

Ultra Violet (UV)
Ionising Radiation

Chemical Carcinogens

Asbestos
Tobacco Smoke

Biological Carcinogens like infections by:

Viruses (e.g., Hepatitis B Virus and Liver Cancer, Human Papilloma Virus (HPV) and Cervical Cancer);

Bacteria (e.g., Helicobater Pylori and Gastric Cancer);

Parasites such as Schistosomiasis; and

Contaminated Food caused by fungi and mould

Recognising the Signs

In Singapore, the top three cancers for men are Colorectal, Prostate, and Lung, while for women the top three cancers are Breast, Colorectal, and Lung. An important part of catching cancer early is being aware of your risk profile and recognising signals that may indicate cancer.

Some common symptoms include:

  • Sores that refuse to heal
  • Nagging cough or hoarseness
  • Unusual bleeding or discharge
  • Indigestion or difficulty in swallowing
  • Thickening of lump in the breast or on other parts of the body
  • Recent changes in a wart or mole
  • Change in bowel habits or bladder function
  • Unexplained weight loss or fever