What Causes Cancer?

Because cancer is a group of diseases, the various types are linked to many different causes, including lifestyle and environmental factors, genetics, and known toxins. For example, smoking is linked to the development of many kinds of cancer.  However, not everyone who smokes gets cancer, and not everyone with lung cancer has been a smoker.

Much research still needs to be done to help us understand the causes of cancer. In the meantime, certain lifestyle habits can help reduce the chances of developing cancer. ACS offers several tips for healthy living, such as eating right, exercising, limiting alcohol consumption, and not smoking.