Which demographic has seen an increase in colorectal cancer incidence and mortality?

Which demographic has seen an increase in colorectal cancer incidence and mortality?

• A. Younger adults under 50 years
• B. Older adults over 65
• C. Children under 12
• D. Mid-life adults 50-64

Answer: (A)

The key idea is that colorectal cancer trends vary by age because screening and prevention have reduced the burden in older adults, while younger adults have seen a real rise. Screening programs typically start at age 50, so older people benefit from earlier detection and removal of polyps, which lowers both new cases and deaths in that group. In contrast, younger adults under 50 have not been screened routinely, and changes in risk factors—like higher rates of obesity, physical inactivity, and diet patterns linked to colorectal cancer—have contributed to more new cases. This rise in incidence, and the impact on outcomes, has led to higher mortality in this younger demographic in some settings. So the group showing an increase in both incidence and mortality is younger adults under 50.

The key idea is that colorectal cancer trends vary by age because screening and prevention have reduced the burden in older adults, while younger adults have seen a real rise. Screening programs typically start at age 50, so older people benefit from earlier detection and removal of polyps, which lowers both new cases and deaths in that group. In contrast, younger adults under 50 have not been screened routinely, and changes in risk factors—like higher rates of obesity, physical inactivity, and diet patterns linked to colorectal cancer—have contributed to more new cases. This rise in incidence, and the impact on outcomes, has led to higher mortality in this younger demographic in some settings. So the group showing an increase in both incidence and mortality is younger adults under 50.