Canadian Cancer Society logo

Cancer of unknown primary

You are here: 

Risk reduction strategies for cancer of unknown primary

Risk reduction is taking action to lower one’s risk of developing cancer. Cancer of unknown primary (CUP) represents a number of different types of cancer, so there isn’t a specific, known way to reduce the risk. However, certain changes in lifestyle can reduce the risk of many types of cancer, and so might reduce the risk of CUP.

Be a non-smoker and avoid second-hand smoke

Smoking, especially heavy, long-term smoking, increases the risk of developing many different types of cancer. If you smoke, get help to quit. Avoid second-hand smoke.

Be physically active and maintain a healthy body weight

Research shows that being overweight or obese increases your risk of developing several different types of cancer. Being physically active and maintaining a healthy body weight lowers the risk of cancer.

More information about reducing cancer risk

Learn about what you can do to reduce cancer risk.


Dr Mani Larijani Studying a cancer-causing protein in 3-D

Read more

Trusted online community of support

Illustration of computer provides a trusted online community for cancer patients, their family and friends.

Learn more