Colorectal cancer is increasingly striking younger adults — and surgeons are urging people not to brush off early symptoms that are easy to dismiss.
According to the American College of Surgeons, colorectal cancer is now the leading cause of cancer death among people under 50. About one in five cases now occurs in people younger than 54, up from roughly one in ten three decades ago. Overall, about one in 25 people will develop colorectal cancer in their lifetime.
What are the warning signs?
Doctors highlight several symptoms that warrant attention, especially in younger adults:
- Persistent changes in bowel habits — constipation, diarrhea, or narrow stools
- Recurring rectal bleeding
- Dark or tarry stools
- Unexplained weight loss and fatigue
- Rectal pressure or discomfort
The stakes are real: in patients under 50, rectal bleeding raises the odds of a colorectal cancer diagnosis by about 8.5 times.
“Awareness of the subtle signs and symptoms of the disease can save lives,” said Dr. Marylise Boutros of Cleveland Clinic Florida. “Any bowel change that is new or different for you deserves medical attention,” added Dr. Paula Denoya of Stony Brook University.
What you can do
The U.S. Preventive Services Task Force now recommends average-risk adults begin screening at age 45. But symptoms shouldn't wait for a screening date — persistent changes deserve a doctor's evaluation regardless of age. Early-stage colorectal cancer is highly treatable, which is exactly why recognizing the signs matters. This article is general information, not medical advice.