Scientists Find Worrying Link Between Common Ulcer Germ and Colorectal Cancer

A common bacterial infection might be more dangerous than we thought after new research shows Helicobacter pylori, a leading cause of ulcers and stomach cancers, possibly fueling a sizable percentage of colorectal cancer cases.

Scientists in Hong Kong estimated the potential global burden of colorectal cancer cases linked to H. pylori infection based on dozens of earlier studies. They found evidence that people with these infections are noticeably more likely to develop colorectal cancer, and that roughly one in every…