Your family’s health history can hold important clues as to your risk for developing cancer. This includes first-degree relatives (parents, siblings, children), and second-degree relatives (grandparents, grandchildren, uncles, aunts, nephews, nieces, and half-siblings).
Cancer is caused by genetic mutations, and sometimes these genetic mutations are hereditary. However, only about 5-10% of cancers are caused by an inherited genetic mutation.
While some people think that “cancer runs in their family”, it’s important to understand that the cancer may be a result of a shared environmental exposure or a similar behavior such as having several members of the same family that smoke.
Also important is to understand that even if you do have an inherited genetic mutation, it doesn’t mean that you will develop cancer.