There's no sure way to prevent cancer, but you can help reduce your risk by making healthy choices like eating right, staying active, and not smoking.
Some types of cancer run in certain families, but most cancers are not clearly linked to the genes we inherit from our parents. Gene changes that start in a single cell over the course of a person's life cause most cancers.
Some types of tests and treatments may actually increase a person's risk of developing cancer. Get the facts about possible links between certain medical procedures and cancer.