Cancer epidemiology in the elderly

Area of Science:

• Gerontology
• Oncology
• Epidemiology

Background:

• Increased life expectancy globally has led to a greater cancer burden in the elderly population.
• Age is a surrogate for prolonged exposure to carcinogens, not a direct risk factor for cancer.
• Cancer trends in the elderly significantly impact public health and healthcare systems worldwide.

Purpose of the Study:

• To analyze trends in cancer mortality and incidence in the elderly population.
• To identify regional variations in cancer trends among older adults.
• To evaluate the implications of changing diagnostic practices on cancer incidence data in the elderly.

Main Methods:

• Analysis of cancer mortality data for common cancer sites in the elderly across different global regions.
• Examination of cancer incidence trends in elderly populations, considering diagnostic and certification changes.
• Review of factors influencing cancer trends, such as smoking patterns.

Main Results:

• Cancer mortality in the elderly increased until the early 1990s, then declined in North America, Western Europe, and among Japanese females.
• Unfavorable mortality trends persist for the elderly in Eastern Europe, primarily linked to smoking.
• Interpreting incidence trends is challenging due to altered diagnosis and certification for cancers like prostate cancer, brain tumors, and multiple myeloma.

Conclusions:

• While cancer mortality shows some positive trends in specific regions, the overall cancer burden in the elderly remains a significant concern.
• Screening and early diagnosis strategies for elderly cancer patients require careful consideration, particularly for prostate, colorectal, and breast cancers.
• Public health interventions addressing lifestyle factors like smoking are crucial for mitigating cancer risk in aging populations.