What is population aging and what are its likely impacts?

• A. A decrease in births.
• B. A rapid population growth.
• C. A stable age structure.
• D. An increasing proportion of older people; impacts healthcare demand, pensions, and workforce structure.

Answer: (D)

Population aging happens when a larger share of the population becomes older, driven by longer life expectancy and lower birth rates. As more people live longer and fewer are born, the age distribution tilts upward, increasing the proportion of older adults and raising the median age. This change affects society in several ways: more demand for health care and long‑term care, since older people typically use more medical services and support; greater pressure on pension systems and retirement schemes because benefits are paid for longer and more people may claim them; and shifts in the economy and labor market as the mix of workers changes, potentially influencing productivity, wages, and the need for policies to support workers with longer lifespans or who are transitioning out of work. The described scenario—an increasing proportion of older people and the resulting impacts on healthcare, pensions, and workforce structure—best captures what population aging involves. The other options describe elements that influence aging rather than define it: a decrease in births is a driver of aging, not the aging state; rapid population growth contradicts aging; a stable age structure would imply little or no shift in the age distribution.