5 Signs You Might Need a Colonoscopy Sooner Than You Think
- California Digestive Disease Center
- Jun 2
- 3 min read

A colonoscopy helps doctors look inside the colon to find signs of disease. It’s a safe and common way to spot problems early. While many people wait until they’re 45 or older to have their first screening, some symptoms may call for an earlier check. Paying attention to your body can make a big difference.
5 Signs You Shouldn’t Wait for a Colonoscopy
Here are five signs that may mean you should talk to your doctor about having a colonoscopy sooner.
Blood in Your Stool
Seeing blood in your stool can feel alarming. It’s one of the clearest signs that something may not be right. Blood can show up as bright red or as dark, tar-like stool. While hemorrhoids and small tears may cause it, it can also be linked to inflammation, ulcers, or even growths in the colon.
Doctors use a colonoscopy to locate the source of the bleeding. The test helps them see where the problem is and decide on the next steps.
Ongoing Stomach Pain or Cramping
Everyone gets an upset stomach sometimes. But if you keep feeling pain, bloating, or cramps that don’t go away, it could point to a deeper issue. Conditions like colitis, polyps, or early stages of colorectal disease may cause these symptoms.
During a colonoscopy, doctors check the colon for signs of swelling, irritation, or abnormal growths. These findings can help guide the best treatment plan.
Changes in Bowel Habits
If your bathroom routine has changed without reason, it might be time to look closer. A sudden shift in frequency, shape, or consistency of your stool can suggest problems in the colon. Loose stools, constipation, or a feeling that you can’t empty your bowels fully could be early signs of concern.
Doctors may recommend a colonoscopy to explore these symptoms. The test helps detect problems that might not be found through physical exams or imaging alone.
A Family History of Colon Cancer
If a close family member has had colon cancer or certain types of polyps, your risk goes up. These risks can start at a younger age, which is why early screenings may be needed. Even if you feel fine, getting checked early helps find hidden changes before they turn serious.
Colonoscopy is often the first step in monitoring people with a family history. It allows doctors to find and remove any unusual growths before they become dangerous.
Unexplained Weight Loss or Fatigue
Losing weight without trying may seem like a good thing, but it can sometimes point to a health problem. If weight loss comes with fatigue, weakness, or a drop in appetite, it’s time to speak to a doctor. These signs can be linked to several issues, including conditions affecting the colon.
A colonoscopy can help reveal hidden causes that may not be obvious through blood tests or scans.
What Happens During a Colonoscopy?
You’ll be asked to follow a clear-liquid diet the day before the test. You’ll also take a preparation solution that cleans out your colon. On the day of the procedure, you’ll receive medicine to help you relax. A thin, flexible tube with a camera is inserted into the rectum. It sends images to a screen so the doctor can view the lining of your colon.
The test usually takes 30 to 60 minutes. Most people go home the same day and return to normal activities after resting.
If you're dealing with persistent digestive changes or symptoms that don't improve, speaking with your doctor can help you take the right step forward. At California Digestive Disease Center, we offer professional and respectful diagnostic support, including colonoscopy services when needed. Reach out to schedule an appointment and learn more about your options.



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