Although the gut renews itself constantly, its stem cells accumulate age-related molecular changes that quietly alter how ...

Cases of colorectal cancer in younger adults are climbing worldwide, driven by lifestyle changes and inherited genetic risks. Diet, obesity, and lack of early screening are playing a major role in ...

Genetics, the microbiome, and low screening rates may be factors in the increase, experts say. Here are risk factors for the disease—and the most common symptoms. This colorized abdominal X-ray shows ...