Colorectal Cancer - Prevention
What to think about
If you have a
very strong family history of colon cancer, you may want to talk to your doctor or a
genetic counselor about having a blood test to look for changed genes.
Genetic testing can tell you whether you carry a
changed, or mutated, gene that can cause colon cancer. Having certain genes
greatly increases your risk of colon cancer.
You have a very strong
family history if each of the following is true:
- You have at least three relatives who have had
colon cancer, and at least one of them is a parent, brother, or
- Those relatives are spread over two generations in a row
(for example, a parent and a grandparent).
- One of those relatives
had cancer before age 50.