Colorectal cancer rates soar among children and young adults, showing distinct behavior

Data from two recent studies indicate a dramatic surge in colorectal cancer among individuals aged 10 to 24, with a six-fold jump in the 10-14 age group and a four-plus-fold rise in teens 15-19 since 1999. After a period of stability, incidence in the youngest cohort accelerated at an estimated 70.54% per year from 2012 to 2015, compounding to nearly a 400% increase. Younger patients are more likely to present with stage 3 or 4 tumors, and about 37% experience recurrence, leading to a 45% mortality rate in the studied group.

Researchers point to lifestyle factors such as ultra-processed foods, sedentary habits, obesity, gut-microbiome disruption, antibiotic use, and possible microplastic exposure as potential contributors. Although still rare—roughly one case per 200,000 youths annually—early signs like rectal bleeding should prompt colonoscopic evaluation even below standard screening ages.