The Longitudinal Aging Study Amsterdam: design and cohort update 2025

Area of Science:

• Gerontology
• Epidemiology
• Public Health

Background:

• The Longitudinal Aging Study Amsterdam (LASA) is a long-term prospective cohort study initiated in 1992.
• It focuses on a nationally representative sample of Dutch older adults, aged 55-84 at baseline.
• LASA has expanded with refresher cohorts to capture evolving population dynamics.

Purpose of the Study:

• To investigate the determinants, trajectories, and consequences of changes in physical, cognitive, emotional, and social functioning in aging populations.
• To analyze longitudinal changes and historical time trends in functioning among older adults.
• To provide an updated overview of the LASA study design, methods, and ancillary studies.

Main Methods:

• Prospective cohort design with over 30 years of follow-up.
• Cohort-sequential design incorporating multiple refresher cohorts.
• Multidisciplinary data collection across various domains of functioning.

Main Results:

• LASA has generated findings published in over 800 scientific publications.
• The study enables the examination of long-term health trajectories and aging patterns.
• Ancillary studies, such as those on loneliness and COVID-19, enrich the dataset.

Conclusions:

• LASA is a robust, multidisciplinary resource for aging research.
• Its extensive follow-up and design facilitate comprehensive understanding of aging processes.
• The study continues to provide valuable insights into the health and functioning of older adults.