ABSTRACT
Cancer prevention can be thought about as taking place on several levels. Primary prevention can be defined as the prevention of cancer in the general population. This could include individuals with a spectrum from normal to high risk for the disease, based upon family history, lifestyle practices and environmental exposures. Secondary prevention addresses individuals in whom precancerous changes have already been documented, e.g. a tobacco snuff dipper who has precancerous changes of leukoplakia. Teniary prevention pertains to individuals who have already had a cancer diagnosis, received treatment with good results, and are interested in preventing recurrence of the disease or symptoms.
