Colon cancer is no longer just an older person's disease: cases are surging among young people, and science points to our lifestyle

Studies show a sharp rise in early-onset colorectal cancer among people aged 25 to 49, and even in some adolescents and children.

The increase is being seen in multiple countries, including Spain, while rates in many people over 50 remain stable.

Researchers point to possible drivers such as diet, inactivity, antibiotics, microbiome changes, and pollutant exposure.

The trend is challenging the idea that colorectal cancer is mainly a disease of older adults and is prompting calls to rethink prevention and diagnosis.