Korean Scientists Find Way to Stop Colon Cancer Spread

Scientists in South Korea just made a discovery that could change how we fight the second deadliest cancer in America.

A research team at Ulsan National Institute of Science and Technology found that blocking a protein called NSMF can slow down or completely stop colorectal cancer tumors from spreading. The study, published in January 2026, shows this approach forces cancer cells into permanent aging without touching healthy intestinal tissue.

That last part matters hugely. One of chemotherapy's biggest problems is that it damages healthy cells along with cancerous ones, causing brutal side effects for patients.

The protein acts like fuel for cancer cells, helping them divide rapidly and spread throughout the body. When researchers blocked it in laboratory and mouse experiments, tumors stopped growing. Even more promising: 33.5% of treated mice lived significantly longer than untreated ones.

Dr. Kyeong Jin Shin, who led the study, believes medicines targeting this protein could become a "novel treatment approach" for humans. Clinical trials haven't started yet, but the research opens a clear path forward.

The timing couldn't be more critical. Colorectal cancer is now the number one cancer killer for Americans under 50, according to Dr. Céline Gounder speaking on CBS News. Overall, it ranks third for men and fourth for women, expected to claim 55,230 lives in 2026 alone.

Young adults face the steepest increases. From 2013 to 2022, diagnosis rates jumped 2.9% per year in people under 50, compared to just 0.4% in those aged 50 to 64. The difference? Older adults get screened regularly through colonoscopies, catching problems early when they're most treatable.

The recent deaths of actors James Van Der Beek and Catherine O'Hara from colorectal cancer sparked a nationwide wake-up call. Van Der Beek, who passed away at 48, had dismissed early warning signs as side effects from coffee and sitting too much.

The Ripple Effect

Their deaths created an unexpected silver lining. The Colorectal Cancer Alliance, a nonprofit fighting the disease, saw usage of its free screening tool triple almost overnight. Social media filled with people sharing stories and urging friends to get checked, even before the recommended age of 45.

One person wrote about their husband finding a precancerous polyp six years before his scheduled screening age, simply because he mentioned a random symptom to his doctor. That early catch likely saved his life.

Medical experts now recommend screening at 45, down from 50, specifically because younger people are getting diagnosed more often. Some doctors are questioning whether even that's early enough, especially for people with family histories of the disease.

While lifestyle factors like diet, smoking, and alcohol play roles in colorectal cancer risk, late diagnosis remains the biggest killer. This new research from South Korea offers something even better than early detection: a potential way to stop the disease in its tracks.