Eating ultra-processed foods could lead to an increased risk of being diagnosed with precancerous colorectal growths for women under 50, according to new research.

A study , published Thursday in JAMA Oncology, looked at health outcomes for 29,105 nurses under 50 who underwent at least one colonoscopy. Participants were followed from June 1991 until June 2015 and filled out questionnaires about their eating habits every four years. The researchers looked at two forms of precancerous polyps: adenomas and serrated lesions.

Women who had an average of three ultra-processed food servings per day had a 3% risk of a precancerous polyp, while women who had an average of 10 or more ultra-processed food servings per day had a 5% risk, according to the study.

Only about 5% of adenomas are canc

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