New research suggests ultraprocessed foods may increase colorectal polyp risk in women under 50. A study published in JAMA Oncology examined health records from more than 29,000 US female nurses. Women consuming nine to 10 servings of ultraprocessed foods daily showed 45% higher polyp likelihood compared to those eating the least. Women eating three daily servings had 3% polyp risk, while those consuming 10 or more servings faced 5% risk. Researchers noted that “even the smallest, most benign polyps probably have some malignant potential if they’re left in place without any treatment.” The study doesn’t prove causation but suggests diet may contribute to rising early-onset colorectal cancer rates. Ultraprocessed foods now comprise over half of typical American calories. (Story URL)