Skin Cancer Prevention (PDQ®): Prevention - Patient Information [NCI] - What is prevention?
Cancer prevention is action taken to lower the chance of getting cancer. By preventing cancer, the number of new cases of cancer in a group or population is lowered. Hopefully, this will lower the number of deaths caused by cancer.
To prevent new cancers from starting, scientists look at risk factors and protective factors. Anything that increases your chance of developing cancer is called a cancer risk factor; anything that decreases your chance of developing cancer is called a cancer protective factor.
Choriocarcinoma of the liver is a very rare tumor that appears to originate in the placenta during gestation and presents with a liver mass in the first few months of life. Metastasis from placenta to maternal tissues occurs in many cases, necessitating beta-human chorionic gonadotropin (beta-hCG) testing of the mother. Infants are often anemic and can be unstable at presentation due to hemorrhage from the tumor. Clinical diagnosis may be made without biopsy based on extremely high serum beta-hCG...
Some risk factors for cancer can be avoided, but many cannot. For example, both smoking and inheriting certain genes are risk factors for some types of cancer, but only smoking can be avoided. Regular exercise and a healthy diet may be protective factors for some types of cancer. Avoiding risk factors and increasing protective factors may lower your risk but it does not mean that you will not get cancer.
Different ways to prevent cancer are being studied, including:
Changing lifestyle or eating habits.
Avoiding things known to cause cancer.
Taking medicines to treat a precancerous condition or to keep cancer from starting.