Colorectal Cancer Surges in Adults Under 50, Swiss Data Show

New Swiss data show colorectal cancer is rising in people under 50 even as older groups see declines; incidence before 50 grew about 0.5% annually to roughly 7 per 100,000, with many cases diagnosed at advanced stages. The rise mainly affects rectal cancers in both sexes and right‑sided colon cancers in young women. Experts urge earlier symptom awareness and considering lower screening thresholds for high‑risk groups, while researchers note diet, obesity, and environmental factors may contribute but no single cause is identified.