According to the data from the Hong Kong Hospital Authority and Cancer Registry (to be released in 2025), lung, breast, colorectal, liver, and prostate cancers are most common in Hong Kong and according to World Health Organization (WHO), the latest global data from the International Agency for Research on Cancer (IARC), lung cancer, breast cancer, and colorectal cancer are the most prevalent cancers in most parts of the world. Each has different causes—for example, smoking is strongly linked to lung cancer, alcohol abusers or hepatitis B carriers are prone to liver cancer, while people with a family history of hereditary breast cancer should have regular checkups to assess their cancer risk.
Cancer originates from genetic mutations in cells, causing uncontrolled growth. Causes include heredity, environmental pollution, smoking, alcohol consumption, and poor diet. Long-term exposure to carcinogens or chronic inflammation also increases risk.
