Seeing your doctor for an annual checkup is one of the best ways to detect a potential health issue before it starts. Depending on your age and risk factors, your doctor may recommend that it’s time to be screened for colorectal cancer. If you’re 45 or older, have no family history of the disease, and show no symptoms, you may be able to take an at-home colorectal cancer test called Cologuard® instead of getting a colonoscopy, as long as you meet a few requirements.
Colorectal cancer 101
Colon cancer and rectal cancer are often referred to together as colorectal cancer. The colon is the final part of the digestive tract, while the rectum is the last several inches of the large intestine.
Fortunately, the rate of people being diagnosed with colorectal cancer has dropped in recent decades because more of us are getting screened and adopting healthier lifestyles. Screening tests also find many cancers earlier, when they are likely to be easier to treat. However, deaths from colorectal cancer in people under 55 have been increasing since the mid-2000s.
With proper screening and treatment, it’s possible to survive colorectal cancer. In fact, more than a million survivors of colorectal cancer live in the U.S. today.
Most adults should get screened for colorectal cancer starting at age 45
Colorectal cancer usually begins as small growths called polyps. (The medical term is adenomatous polyps.) Over time, polyps can become cancerous, but even then they don’t always cause symptoms.
You can have polyps or colorectal cancer without knowing it. That’s why you should get screened for colorectal cancer starting at age 45 and continue until age 75. Screening is so important because colorectal cancer is easier to treat when it’s found early, before symptoms develop.
These guidelines are based on recommendations from the U.S. Preventive Services Task Force (USPSTF), an independent volunteer panel of national experts in disease prevention. The organization plays a key role in determining what preventive care services health plans must cover with $0 out-of-pocket costs.
Learn to spot the symptoms of colorectal cancer
Many people with colorectal cancer have no signs or symptoms, particularly early on. In some cases, however, colorectal cancer may cause symptoms, including:
- Diarrhea, constipation, or a change in the consistency of your stool that lasts four weeks or longer
- Blood in or on your stool
- Stomach pain, aches, or cramps that don’t go away
- A feeling that your bowel isn’t emptying completely
- Unexplained weight loss
If you have any of these signs or symptoms, talk to your doctor. It doesn’t necessarily mean you have cancer. Only a doctor can determine what’s causing your symptoms.
Control your risk factors for colorectal cancer
It’s not always clear what causes cancer of the colon or rectum, but you can control some risk factors for colorectal cancer, while others can’t be changed.
Colorectal cancer risk factors you can change
Weight. Being overweight or obese can increase your risk of developing colorectal cancer. Having a larger waistline also raises the risk, especially in men. If you’re overweight, ask your doctor about healthy ways to lose weight.
Physical inactivity. Living a sedentary lifestyle can lead to a greater chance of developing colorectal cancer. Being active and moving more can help lower your risk, so take a moment to discover how to sneak physical activity into your life.
Diet. Colorectal cancer may be associated with low-fiber, high-fat diets. A diet high in red meat and processed meats (hot dogs and some lunch meats) may also raise your risk. Eating a healthy, high-fiber diet may lower your risk of developing the disease.
Smoking. People who have smoked tobacco for a long time have a higher risk of developing colorectal cancer. Talk to your doctor about effective ways to quit smoking.
Alcohol. Colorectal cancer may be linked to heavy alcohol use. If you choose to drink, limit yourself to no more than two drinks a day for men and one drink a day for women.
Colorectal cancer risk factors you can’t change
Age. Anyone can get colorectal cancer, but it’s more common as we age.
Family history. If your parent, brother, sister, or child developed colorectal cancer, you’re at an increased risk. A family history of polyps, the growths in the colon that can become cancerous, also increases your risk. Your doctor may recommend that you should start screening for the disease before age 45.
Inflammatory intestinal conditions. Inflammatory bowel disease (IBD), ulcerative colitis, and Crohn’s disease all increase your risk of colorectal cancer. However, irritable bowel syndrome (IBS) is not associated with colorectal cancer.
Type 2 diabetes. People with type 2 diabetes have an increased risk of colorectal cancer. Making healthy lifestyle changes can lower your risk of developing diabetes.
Racial and ethnic background. African Americans and Ashkenazi Jews of Eastern European descent have higher rates of the disease. Researchers are still studying the reasons for this.
Genetic syndromes. A very small percentage of people inherit gene mutations that have been linked with colorectal cancer.
Ask your doctor about what colorectal cancer screening test is right for you
Screening options for colorectal cancer include tests that look for signs of cancer in the stool and visual exams of the colon and rectum. Talk with your doctor about which option may be best for you and check with your health insurance provider about which tests are covered.
Colorectal cancer screening tests include:
- Fecal occult blood test (FOBT)
- Flexible sigmoidoscopy screening
- Colonoscopy
- Stool DNA test (Cologuard)
Is Cologuard right for you?
Cologuard is an at-home test for colon and rectal cancer approved by the Food and Drug Administration (FDA). Available by prescription, it’s ideal for some people who are looking for an alternative to a colonoscopy, which requires bowel preparation, sedation, and time off from work. One advantage of Cologuard is that it doesn’t require any special diets, bowel prep, laxatives, or enemas. The patient simply collects a stool sample at home to and mails it to a lab for analysis.
Cologuard is not right for everyone. And, some people will need to follow it up with a colonoscopy. In order to qualify for Cologuard, you must:
- Be age 45 years or older
- Have no symptoms of colorectal cancer
- Have no history of IBD, Crohn’s disease, or ulcerative colitis
- Have no personal or family history of pre-cancerous polyps or colorectal cancer
- Have no family history of genetic syndromes linked with colorectal cancer
Lower your risk for colorectal cancer with preventive screenings
Whether or not Cologuard is right for you, be sure to ask your doctor about getting tested for colorectal cancer. This simple preventive screening could save your life.