My great grandparents both had breast cancer, their daughter died from it and their son died from pancreatic cancer. does this increase my risk of can?

Genetic counseling: It is possible your risk could be increased. I recommend you find a cancer center in your area and find a high risk program. They can get you hooked up with a gentic counselor who can do a detailed evaluation of you and your family and determine what additional genetic tests are needed and your true risk for cancer.

Unfortunately, yes: History of cancer in one's family is one of the risk factors for the disease. Please see this site for additional information. http://www.cancer.gov/cancertopics/pdq/genetics/risk-assessment-and-counseling/healthprofessional/page1.

Yes: You have a strong family history and may carry a mutation that will increase your personal risk of cancer and any children you have or may have in the future. Go to a reputable cancer center that has a genetic counselor and they can help sort it out and make screening recommendations. Pancreatic and breast cancers can be found in families with brca 1 and 2 mutations, among other cancer syndromes.