Study Links Ultra-Processed Foods to Higher Polyp Risk in Younger Women
A major new study suggests that women under 50 who regularly consume high amounts of ultra-processed foods face a significantly greater likelihood of developing precancerous colon polyps. The findings were published Thursday in JAMA Oncology.
Researchers analyzed data from 29,105 female nurses under the age of 50 and discovered that women who ate an average of three servings of ultra-processed foods daily had a 3% risk of developing a precancerous polyp. For those consuming 10 or more servings each day, the risk rose to 5%. Participants in the highest consumption group were found to have a 45% higher risk of adenomas — the type of growth that can precede colorectal cancer.
Ultra-processed foods cited in the study include items like sodas, chips, cookies, crackers, candy, boxed macaroni and cheese, frozen or ready-to-eat meals, lunch meats, jerky, and hot dogs.
The research, carried out jointly by Harvard University and Mass General Brigham between 1991 and 2015, did not conclusively establish that these foods cause the polyps, but the correlation was strong. Each participant underwent at least two lower endoscopies before turning 50 and completed detailed dietary questionnaires every four years, allowing scientists to estimate long-term eating patterns.
“Our findings support the importance of reducing the intake of ultra-processed foods as a strategy to mitigate the rising burden of early-onset colorectal cancer,” said senior author Andrew Chan, a gastroenterologist at the Mass General Brigham Cancer Institute and a professor at Harvard Medical School.
Chan added that “the increased risk seems to be fairly linear, meaning that the more ultra-processed foods you eat, the more potential that it could lead to colon polyps.”
The study’s authors also considered other known contributors to colorectal cancer, including weight, Type 2 diabetes, and low fiber intake. “Even after accounting for all these other risk factors, the association with ultra-processed foods still held up,” Chan said.
{Matzav.com}
