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The colorectal cancer conundrum: the rising burden in younger adults
Summary
Researchers analyzing 2025 U.S. cancer statistics found that colorectal cancer incidence is rising, with a notable shift toward younger adults and women — a trend that has accelerated in recent decades and is not fully explained by known risk factors. This changing demographic pattern raises questions about emerging environmental or lifestyle exposures, including potential roles for microplastics and endocrine-disrupting chemicals.
In January, 2025, the American Cancer Society released their annual report on cancer statistics. Incidence of cancer has been rising for years, and the 2025 report noted that incidence continues to increase for six of the top ten cancers, namely breast, prostate, melanoma, uterine, pancreatic, and colorectal cancer. However, the report also noted a shift in the burden of cancer incidence, from older adults to younger adults, and from men to women.
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