Health library

Colorectal cancer: True or false?

Researchers don't yet know the exact cause of most colorectal cancer. However, a lot is known about how to prevent, treat and screen for this disease. How much do you know about colorectal cancer?

True or false: Colorectal cancer is not a very common cancer.

False. It's one of the most commonly diagnosed cancers in the U.S., and a leading cause of cancer-related deaths. Colorectal cancer occurs slightly more frequently in men than in women.

True or false: Colorectal cancer often has no symptoms in its early stages.

True. Most people don't have any signs or symptoms of colorectal cancer. When symptoms do occur, they can include a change in bowel habits; rectal bleeding, dark stools, or blood in the stool; stomach cramps; weakness and fatigue; and weight loss for no reason.

True or false: Following a plant-based diet may reduce the risk of colorectal cancer.

True. Healthy eating patterns that include fruits, veggies and whole grains are associated with a reduced risk for colorectal cancer. To get the most nutrients, choose a variety of fruits and veggies of different colors.

True or false: You might increase your risk for colorectal cancer if you eat a lot of processed meat.

True. A diet that's high in processed meat—like hot dogs, ham and sausage—can raise your risk for colorectal cancer. Other things that can raise your risk include smoking, drinking alcohol excessively and being physically inactive.

True or false: Most people who get colorectal cancer have a family history of the disease.

False. Having a family history of colorectal cancer does raise your risk, but most cases are found in people without a family history. Age is one of the biggest risk factors: Most colorectal cancers are found in people age 50 and older. That's why it's so important to start routine colorectal cancer screening when you turn 45.

Ask a doctor about your colorectal cancer risk and screening options. Routine screening for colorectal cancer is crucial to catching the disease early. Colorectal cancer is often very treatable when caught in its early stages—before it has a chance to spread.

Explore screening options