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Colorectal Cancer Demographics Shift Toward Younger Americans: Research

Rectal and distal colon cancers now account for nearly one-third of cases, with colorectal cancer diagnoses rising 3% annually in adults under 50, American Cancer Society reports.

  • The American Cancer Society released its findings Monday showing colorectal cancer diagnoses shifting toward people under 65, with 45% of new cases and rising rectal cancers driving the trend.
  • In 2021 the U.S. Preventive Services Task Force cut the screening age to 45, but just more than a third of people ages 45 to 49 are getting screened despite previous guidance at age 50.
  • Incidence rose about 3% annually for people ages 20 to 49, with many cancers diagnosed after a 4- to 6-month delay, said Andreana Holowatyj.
  • Clinicians are considering fast-tracking symptomatic patients under age 45 to avoid referral loops that delay diagnosis and treatment, while doctors urge earlier education about colorectal cancer.
  • Projections show a heavy near-term burden that informs prevention priorities as researchers link more than half of colorectal cancers to controllable risk factors and forecast 158,850 new cases and 55,230 deaths in 2026.
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NBC Dallas-Fort Worth broke the news in Fort Worth, United States on Monday, March 2, 2026.
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