A growing number of studies suggest that eating a lot of ultraprocessed foods may be contributing to the rise of precancerous colon growths in adults under 50. A large long-term study in younger women found that those who ate the most ultraprocessed foods were far more likely to develop adenomas — the type of polyp most likely to turn into colorectal cancer. The findings add to concerns that modern diets may be raising cancer risk in younger generations.
Ultraprocessed foods can increase inflammation, weaken gut repair, and disrupt the microbiome, making cells more vulnerable to damage. The study found higher adenoma rates in people who frequently ate sugary foods, artificial sweeteners, packaged sauces, spreads, and condiments. Since most colorectal cancers begin as adenomas — and screening now starts at age 45 — many younger adults may develop polyps years before they are detected.
Genetics matter, but experts say the rapid rise in early-onset colorectal cancer is more strongly tied to lifestyle. Rising obesity, poor metabolic health, and high intake of ultraprocessed foods all appear to play a role. Reducing these dietary and environmental risks is now seen as an important step in protecting younger adults before disease develops.
SOURCE: