Researchers have made a startling discovery that ultra-processed foods may be linked to an increased risk of precancerous polyps in women under 50, according to a new study published in JAMA Oncology.
The study, which followed 29,105 nurses over nearly two decades, found that those who consumed the most ultra-processed foods - defined as packaged or processed items with few whole ingredients - were more likely to develop precancerous polyps, including adenomas and serrated lesions. In fact, women who ate an average of three ultra-processed food servings per day had a 3% risk of developing these growths, while those who consumed 10 or more servings per day were at a 5% risk.
The study's findings have significant implications for the growing concern about colon cancer, with colorectal cancers often starting as precancerous polyps. While only about 5% of adenomas are cancerous, a staggering 75% of these cancers develop from these growths.
Dr. CΓ©line Gounder, a medical contributor to CBS News and editor-at-large for public health at KFF Health News, notes that while ultra-processed foods do not have a set definition, they often include packaged items with few whole ingredients. "You don't see many good ultra-processed foods," she warns. "The more you eat, the worse it is for your health."
Researchers believe that the link between ultra-processed foods and precancerous polyps may be due to changes in the gut microbiome caused by these processed foods. Gounder explains that consuming ultra-processed foods can disrupt the balance of bacteria in the gut, leading to inflammation and increased permeability of the gut wall.
While more research is needed to fully understand the impact of ultra-processed foods on health, the study's findings are a stark reminder of the importance of making informed food choices. As Gounder notes, "if you can't pronounce an ingredient on the package, it is probably an ultra-processed food."
The study, which followed 29,105 nurses over nearly two decades, found that those who consumed the most ultra-processed foods - defined as packaged or processed items with few whole ingredients - were more likely to develop precancerous polyps, including adenomas and serrated lesions. In fact, women who ate an average of three ultra-processed food servings per day had a 3% risk of developing these growths, while those who consumed 10 or more servings per day were at a 5% risk.
The study's findings have significant implications for the growing concern about colon cancer, with colorectal cancers often starting as precancerous polyps. While only about 5% of adenomas are cancerous, a staggering 75% of these cancers develop from these growths.
Dr. CΓ©line Gounder, a medical contributor to CBS News and editor-at-large for public health at KFF Health News, notes that while ultra-processed foods do not have a set definition, they often include packaged items with few whole ingredients. "You don't see many good ultra-processed foods," she warns. "The more you eat, the worse it is for your health."
Researchers believe that the link between ultra-processed foods and precancerous polyps may be due to changes in the gut microbiome caused by these processed foods. Gounder explains that consuming ultra-processed foods can disrupt the balance of bacteria in the gut, leading to inflammation and increased permeability of the gut wall.
While more research is needed to fully understand the impact of ultra-processed foods on health, the study's findings are a stark reminder of the importance of making informed food choices. As Gounder notes, "if you can't pronounce an ingredient on the package, it is probably an ultra-processed food."