There are many factors that can contribute to why you get cancer; your genes could be one of them. Cancer occurs when you have abnormal cells that grow out of control in your body. Generally, the term "cancer" is used for the over 100 diseases that can occur from the abnormal cell growth in your body.Depending on the type of cancer, it could have been caused due to family history, or it could have been a result of your lifestyle.What percentage of cancers are strictly genetic? Is there anything you can do to reduce your chances?Raymond Francis, MSc, joins Dr. Mike to discuss the genetic pathway of cancer.