Colon Cancer is Rising in Younger Adults – Here's Why Screenings Matter

Colorectal cancer is now the leading cause of cancer deaths among people younger than 50, according to a recent American Cancer Society study.

The trend helped drive a change in national screening recommendations in recent years, with guidelines now advising average-risk adults begin colorectal cancer screening at age 45.

Regular screenings matter because colorectal cancer often develops silently.

"One of the big problems is colon cancer often doesn't have any symptoms, and that's the importance of doing a colonoscopy," said Dr. Timothy Swindoll, Hawaii Pacific Health Medical Group chief of gastroenterology, who also sees patients at Straub Benioff Medical Center.

In addition to being a prevention tool, colonoscopies can be used to treat cancerous polyps, if caught early.

"We can remove small precancerous polyps before they become a problem. Sometimes, we can even remove cancerous polyps and that's curative of the cancer," Dr. Swindoll said. "If it's more advanced, you might need surgery or chemotherapy, but even then, if it's caught early, you have a great life expectancy and survival rate."

In observance of Colorectal Cancer Awareness Month, Dr. Swindoll sat down with Hawaii News Now "Sunrise" cohost Steve Uyehara to talk about colon cancer symptoms, the importance of colonoscopies, and common myths he hears in his practice.

This segment originally aired March 11, 2026, as part of the Hawaii News Now "Sunrise" Healthier Hawaii series. Watch the full broadcast here or below.

Published on: March 13, 2026