Scientists Link Common Ulcer Germ H. pylori to 22% of Colorectal Cancers

Researchers in Hong Kong analyzed 43 studies covering 48.7 million people and estimated that Helicobacter pylori infection raises colorectal cancer risk by 59%, with up to 22% of global cases potentially linked to the bacterium. Screening and antibiotic treatment could help prevent the disease.

• H. pylori infection linked to a 59% higher risk of colorectal cancer
• Up to 22% of global colorectal cancer cases may be tied to the bacterium
• Analysis covered 43 studies and 48.7 million people
• In a narrower study selection the attributable share drops to 12%