Prevention and Healthy Living

Improving cancer prevention is part of the mission of the American Society of Clinical Oncology (ASCO). Cancer Prevention and risk-reduction strategies can greatly lower the physical, emotional, and financial burden of cancer and improve the overall health of cancer survivors, including lowering the risk of the cancer coming back or the formation of a second cancer.

Although the risk of developing cancer can be greatly reduced by avoiding risk factors, not all cancers are preventable. Review Cancer.Net's Cancer Types sections for more information about preventing specific types of cancer.

Much of the information in this section is adapted from the ASCO Curriculum, Cancer Prevention, an education resource developed by ASCO for doctors and other health care professionals who treat people with cancer.

Understanding Cancer Risk

A risk factor is anything that increases a person's chance of developing a disease, such as cancer. This section provides an overview of risk factors.

Cancer Screening

Find information about the goals and limitations of cancer screening and common screening tests.


Find information on how chemoprevention can slow the development of cancer.

HPV and Cancer

Get information on the types of cancer related to human papillomavirus (HPV), the most common sexually transmitted disease in the United States, as well as ways to help prevent infection.

Menopause and Cancer Risk

Learn about the complex relationship between menopause, hormone replacement therapy, and cancer risk.

Obesity and Cancer

Find information on why maintaining a healthy weight is important for cancer prevention and recovery from cancer.

Physical Activity

Learn how physical activity can prevent cancer and get physical activity recommendations for good health.

Protecting Your Skin From the Sun

Take these simple steps to prevent skin cancer and learn how to find the disease early, when there is the greatest chance it can be successfully treated.

Tobacco Use

Learn how not smoking and quitting smoking prevents cancer and improves the results of cancer treatment.