Separating fact from fiction

Debunked! 10 colon cancer myths and misconceptions

For Colorectal Cancer Awareness Month, we’re busting through the fallacies and getting to the bottom of the truth around colon cancer.
Exact Sciences | March 2026
A woman holds a blue ribbon near her abdomen in honor of Colorectal Cancer Awareness Month.

Let’s be honest: Because we rarely talk about colon health, the door has been left wide open for some pretty stinky rumors. While it can be an awkward topic, the facts don’t lie: Colorectal cancer is currently the second1 leading cause of cancer death in the U.S., yet it’s also one of the most preventable2 and treatable diseases, if caught early.3*

Well, guess what? We’re flushing away (sorry) the myths and getting the real scoop on your gut health. Whether you’re 25 or 45 (the new recommended screening age, by the way), it’s time to separate fact from fiction.


Start with Cologuard

Myth 1: "I feel fine, so I’m all good."

One of the most common myths and misconceptions is that you only need a screening if you’re experiencing symptoms like pain or bleeding. In reality, early-stage colon cancer is often a silent disease with no warning signs at all.4

The goal of screening is to find precancerous polyps before they turn into something serious, or to catch cancer when it’s small and highly treatable. Waiting for symptoms often means the disease has already progressed.

Myth 2: "Colon cancer only affects older people."

 While risk increases with age, cases in adults under 50 are rising. This is why the American Cancer Society and other health experts now recommend starting regular screenings at age 45  for those at average risk.5

Myth 3: "I don't have a family history, so I'm not at risk."

It’s a common mistake to assume that colon cancer is strictly a hereditary disease. Many cases occur among people without any family links.6 Relying on your family tree as a get-out-of-jail-free card is a concerning myth that leads to delayed screenings.

Myth 4: "I lead a healthy lifestyle, so that’s enough to prevent it."

While a diet high in fiber and regular exercise help lower your risk, they’re not a magic pill for prevention. Even the healthiest people can develop colon cancer due to genetic or other factors beyond their control. Lifestyle changes are powerful tools, but they must be paired with routine screenings to be effective.

Myth 5: "My detox diet and colon cleanses can flush out cancer risk."

There is zero scientific evidence that detox fads, juice cleanses, or special supplements can prevent colon cancer. Your best course of action is to use proven strategies: a healthy diet that limits processed meats, avoiding alcohol and tobacco, and — yup, you guessed it — timely colon cancer screenings, especially when you hit 45 and are at average risk.

Meghan smiling and sitting in her living room as she is being interviewed.
Read Meghan's story about taking action and not delaying colon cancer screenings.

Myth 6: "If I’m diagnosed, it’s basically a death sentence."

When caught early, colon cancer is highly treatable and has a 5-year survival rate of over 90%.3*> However, the outcome of your diagnosis relies heavily on timing. This is why getting screened for colon cancer should be part of your checkup list once you turn 45. And if you are diagnosed, please remember that it’s the start of your treatment plan, and not the end of the road.

Myth 7: "Screening isn't covered by my insurance." 

Under the Affordable Care Act (ACA), most private insurance plans and Medicare are required to cover colon cancer screenings with no out-of-pocket costs for patients aged 45 to 75. This includes a colonoscopy and use-at-home testing options.

Myth 8: "Having a polyp means I definitely have cancer."

 Finding a polyp during a screening can be alarming, but it is not a cancer diagnosis. Polyps are benign (non-cancerous) growths. While some have the potential to develop into cancer over many years, most do not. Timely screenings that start at age 45 help detect polyps at their earlier stages and are a crucial step in preventing colon cancer.

Myth 9: "A colonoscopy is the only way to get tested."

 Many people avoid screening because they think a colonoscopy is the only option to get tested, but there are several methods available today, including ones you can use at home and ship your stool samples to a lab.


You probably saw where this was heading, but one of your options is Cologuard® test. Safe, noninvasive, and FDA-approved, it’s one of the stool tests you can use at home. Ask your doctor to write a prescription during your next visit, or request one online.


Ultimately, the best test is the one that actually gets done. Talk to your doctor about which method fits your lifestyle.

Safe.
Noninvasive.
FDA-approved.

Myth 10: "I did one of those use-at-home stool tests and it came back positive, so I definitely have cancer."

If your use-at-home test kit comes back positive, don’t panic. A positive stool test result isn't a diagnosis. These tests are designed to be highly sensitive and often detect polyps or even minor bleeding. If yours comes back positive, you’ll need a follow-up colonoscopy. This way, you can find out what’s going on and create a treatment plan with your doctor if it’s needed.

The truth will set you free

Now that we’ve debunked these common myths and misconceptions, the reality is clear: colon cancer is highly preventable, treatable, and survivable when we stop letting false beliefs call the shots.


So whether you’re just turning 45 or you’ve been putting this off for a while, remember that taking charge of your gut health isn't just about you — it’s about staying around for the people you love. Take a deep breath, choose the screening method that feels right for you, and give your doctor a call.


You’ve got this.