What is the link between ultra-processed foods and colorectal cancer risk?

According to the study, people who ate the highest levels of ultra-processed foods had about a 1.45-fold higher risk of developing colorectal polyps, a precursor to cancer, compared to those who consumed the least.

How are colorectal cancer rates changing in young adults?

Modelling suggests that colorectal cancer in young adults will double about every 15 years in Canada, the U.S., Australia, and the U.K. in both sexes.

What advice do experts give to reduce colorectal cancer risk?

Experts recommend limiting intake of ultra-processed foods, which are often high in sugar, salt, and unhealthy fats, and instead choosing fresh, whole foods whenever possible.

Home / Health / Processed Foods Fuel Alarming Rise in Young Colorectal Cancer Cases

Processed Foods Fuel Alarming Rise in Young Colorectal Cancer Cases

13 Nov

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Summary

Eating high levels of ultra-processed foods linked to 45% higher risk of colorectal polyps
Colorectal cancer rates doubling every 15 years in young adults in several countries
Experts advise limiting ultra-processed foods and choosing fresh, whole foods instead

According to a 24-year study published on November 10, 2025, eating a diet highest in ultra-processed foods is linked to a 1.45-fold higher risk of developing colorectal polyps, a precursor to cancer, compared to those who consume the least. The study, which followed nearly 30,000 female participants, is the latest evidence pointing to the potential role of ultra-processed foods in the rising rates of colorectal cancer among young adults.

Ultra-processed foods, such as mass-produced bread, breakfast cereals, and instant soups, often contain high levels of sugar, salt, saturated fat, and food additives. Researchers say the surge in colorectal cancer cases in people in their 20s, 30s, and 40s in several countries cannot be fully explained by genetics alone, prompting them to investigate lifestyle factors like changes in diet.

Experts are urging the public to limit their intake of ultra-processed foods and choose fresh, whole foods instead. "There seems to be growing evidence that there is a cogent reason to think about limiting one's intake of ultra-processed food," said Dr. Andrew Chan, a co-author of the study. The higher risk associated with eating ultra-processed foods is on par with the risk from obesity or lack of physical activity, he added.