Colorectal Cancer: Catching It Early or Stopping it Before it Starts
March 24, 2022

By the American Cancer Society // the Academy of Nutrition and Dietetics
Catch it Early and Reduce Your Risk
Colorectal cancer is the third most common cancer in both men and women in the US. Routine testing can help prevent colorectal cancer or find it at an early stage, when it’s smaller and easier to treat. If it’s found early, the 5-year survival rate is 90%. Many more lives could be saved by understanding colorectal cancer risks, increasing screening rates, and making lifestyle changes.
The 5-year survival rate is 91% if colorectal cancer is found at the local stage. However, only 38% of colorectal cancer cases are diagnosed at an early stage. This is partly due to low testing rates.
- Older age
- Personal or family history of colorectal cancer or polyps
- Inflammatory bowel disease
- Hereditary syndromes (such as Lynch Syndrome)
- Type 2 Diabetes
Who Gets Colorectal Cancer?
Anyone can get colorectal cancer, but some people are at an increased risk.
Gender: Colorectal cancer is more common in men and than in women.
Race/Ethnicity: Colorectal cancer incidence rates are highest in African American men and women, followed closely by the American Indian/Alaska Native population. The rates of colorectal cancer in non-Hispanic White and Hispanic/Latino populations are lower than these populations. Asian/Pacific Islander men and women have the lowest rates of colorectal cancer.
If You’re Age 45 or Older, Talk to Your Doctor About Getting Screened.
For average-risk individuals with no symptoms, testing should begin at age 45. If you have any of the risk factors or are experiencing symptoms, speak to your healthcare provider right away. Symptoms include rectal bleeding, blood in the stool, dark- or black-colored stools, change in shape of stool, lower stomach cramping, unnecessary urge to have a bowel movement, prolonged constipation or diarrhea, and unintentional weight loss.
Pros and Cons of Different Types of Screening Tests
Several types of screening tests can be used. Talk to your health care provider about which ones might be good options for you. No matter which test you choose, the most important thing is to get tested.
Stool-Based Tests
Guaiac-based Fecal Occult Blood Test/Fecal Immunochemical Test: Can detect blood in stool caused by tumors or polyps. Health care provider gives patient at-home kit.
Pros | Cons |
No bowel preparation |
May miss some polyps/cancers |
Sampling done at home |
Colonoscopy needed if abnormal |
Done every year |
Multi-targeted stool DNA test (MT-sDNA): Looks for certain DNA changes from cancer or polyps. Health care provider has kit sent to patient.
Pros | Cons |
No direct risk to the colorectum |
May miss some polyps/cancers |
No bowel preparation |
Colonoscopy needed if abnormal |
Sampling done at home |
Done every 3 years |
Visual Examination Tests
Colonoscopy: Direct exam of colon and rectum. Polyps removed if present. Required for abnormal results from other tests.
Pros | Cons |
Can usually view entire colorectum |
Can be expensive |
Can biopsy and remove polyps |
Higher risk than other tests |
Done every 10 years |
Full bowel preparation needed |
CT Colonography: Detailed, cross-sectional, 2-D or 3-D views of the colon and rectum with an x-ray machine linked to a computer
Pros | Cons |
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What Can You Do About It
Reduce your risk by managing your diet, weight, and physical activity, and by avoiding tobacco and alcohol.
Diet
- Eat more vegetables, fruits and whole grains.
- Limit intake of red and processed meats, fried foods and high-calorie fats.
Weight
- Get to and maintain a healthy weight.
- Avoid weight gain as an adult.
Physical Activity
- Increase intensity and amount of physical activity.
- Limit sedentary behavior and screen-based entertainment.
Lifestyle
- Avoid tobacco.
- Limit or avoid alcohol.
High-Fiber Nutrition Therapy
Fiber and fluid may help you feel less constipated and bloated and can also help ease diarrhea. Increase fiber slowly over the course of a few weeks. This will keep your symptoms from getting worse.
Tips for Adding Fiber to Your Eating Plan
- Slowly increase the amount of fiber you eat to 25 to 35 grams per day.
- Eat whole grain breads and cereals. Look for choices with 100% whole wheat, rye, oats, or bran as the first or second ingredient.
- Have brown or wild rice instead of white rice or potatoes.
- Enjoy a variety of grains. Good choices include barley, oats, farro, kamut, and quinoa.
- Bake with whole wheat flour. You can use it to replace some white or all-purpose flour in recipes.
- Enjoy baked beans more often! Add dried beans and peas to casseroles or soups.
- Choose fresh fruit and vegetables instead of juices.
- Eat fruits and vegetables with peels or skins on.
- Compare food labels of similar foods to find higher fiber choices. On packaged foods, the amount of fiber per serving is listed on the Nutrition Facts label.
- Check the Nutrition Facts labels and try to choose products with at least 4 g dietary fiber per serving.
- Drink plenty of fluids. Set a goal of at least 8 cups per day. You may need even more fluid as you eat higher amounts of fiber. Fluid helps your body process fiber without discomfort.
Foods Recommended
Foods With at Least 4 g Fiber per Serving
Food Group | Choose |
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Grains | 1/3-½ cup high-fiber cereal |
Dried beans and peas | ½ cup cooked red beans, kidney beans, large lima beans, navy beans, pinto beans, white beans, lentils, or black-eyed peas |
Vegetables | 1 artichoke (cooked) |
Fruits | ½ cup blackberries or raspberries 4 dried prunes |
Foods With 1 to 3 g Fiber per Serving
Food Group | Choose |
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Grains | 1 bagel (3.5-inch diameter) 1 slice whole wheat, cracked wheat, pumpernickel, or rye bread 2-inch square cornbread 4 whole wheat crackers 1 bran, blueberry, cornmeal, or English muffin ½ cup cereal with 1-3 g fiber per serving (check dietary fiber on the product’s Nutrition Facts label) 2 tablespoons wheat germ or whole wheat flour |
Fruits | 1 apple (3-inch diameter) or ½ cup applesauce ½ cup apricots (canned) 1 banana ½ cup cherries (canned or fresh) ½ cup cranberries (fresh) 3 dates 2 medium figs (fresh) ½ cup fruit cocktail (canned) ½ grapefruit 1 kiwi fruit 1 orange (2½-inch diameter) 1 peach (fresh) or ½ cup peaches (canned) 1 pear (fresh) or ½ cup pears (canned) 1 plum (2-inch diameter) ¼ cup raisins ½ cup strawberries (fresh) 1 tangerine |
Vegetables | ½ cup bean sprouts (raw) ½ cup beets (diced, canned) ½ cup broccoli, brussels sprouts, or cabbage (cooked) ½ cup carrots ½ cup cauliflower ½ cup corn ½ cup eggplant ½ cup okra (boiled) ½ cup potatoes (baked or mashed) ½ cup spinach, kale, or turnip greens (cooked) ½ cup squash—winter, summer, or zucchini (cooked) ½ cup sweet potatoes or yams ½ cup tomatoes (canned) |
Other | 2 tablespoons almonds or peanuts 1 cup popcorn (popped) |
High Fiber Sample 1-Day Menu
Breakfast
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1/2 cup orange juice, with pulp
1/2 cup raisin bran
1 cup fat-free milk
1 cup coffee
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Morning Snack
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1 cup plain yogurt
2 cups water
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Lunch
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1 1/2 cups chili
1/2 cup kidney beans
1/2 cup soy crumble
2 tablespoons shredded cheese
8 whole wheat crackers
1 apple (with skin)
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Evening Meal
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2 ounces sliced chicken
1/4 cup tofu
2 cups mixed fresh vegetables
1 cup brown rice
1/2 cup strawberries
1 cup hot tea
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Evening Snack
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2 tablespoons almonds
1 cup hot chocolate
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Daily Sum
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High Fiber Vegan Sample 1-Day Menu
Breakfast
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½ cup bran cereal
1 banana
½ cup blueberries
1 cup soymilk fortified with calcium, vitamin B12, and vitamin D
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Lunch
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½ cup chili with beans with:
½ cup tempeh crumbles
¼ cup crushed whole wheat crackers
1 apple
1 cup soymilk fortified with calcium, vitamin B12, and vitamin D
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Evening Meal
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1 veggie burger
1 whole wheat bun
1 leaf lettuce
1 slice tomato
Salad made with: 1 cup lettuce
¼ cup chickpeas
½ cucumbers
1 tablespoon italian dressing
1 cup strawberries
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Evening Snack
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¼ cup almonds
1 cup carrot sticks
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Daily Sum
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High Fiber Vegetarian (Lacto-Ovo) Sample 1-Day Menu
Breakfast
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½ cup bran cereal
1 banana
½ cup blueberries
1 cup 1% milk
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Lunch
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2 slices whole wheat bread
2 tablespoons hummus
1 ounce cheddar cheese
1 leaf lettuce
2 slices tomato
½ cup vegetarian baked beans
1 orange
1 cup 1% milk
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Evening Meal
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Stir fry made with: ½ cup tempeh
½ cup brown rice
1 cup frozen broccoli
1 tablespoon soy sauce
¼ cup peanuts
1 pear
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Evening Snack
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6 ounces fruit yogurt
1 cup air popped popcorn
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Daily Sum
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Download the ACS article here.
References:
Academy of Nutrition and Dietetics
Helpful Links
Learn More // cancer.org/colon
Detect it Early // cancer.org/colontesting
Live Healthy // cancer.org/nupa