Colorectal cancer cases are rising rapidly among people under 50, while rates in older adults continue to decline due to routine screenings. Researchers believe modern lifestyle and environmental changes may be contributing to this alarming trend. Possible factors include obesity, sedentary habits, ultraprocessed foods, excessive antibiotic use, disrupted gut microbiomes, chronic inflammation, and even exposure to microplastics and “forever chemicals.”
Doctors are urging younger adults not to ignore warning signs such as rectal bleeding, unexplained weight loss, abdominal pain, blood in stool, or changes in bowel habits. Early detection is critical, as many younger patients are diagnosed at later stages when treatment becomes more difficult.
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