Background for the United Nations International Day of Older Persons

Exploring how longer lives are reshaping health, policy, and society.
A World Growing Older and Living Longer
Population aging is no longer a distant projection; it is an unfolding global reality. The global population aged 60 or over is projected to rise from approximately 1.22 billion in 2025 to more than 2.1 billion by 2050, a transformation that is without historical precedent, most pronounced in developing regions. Growth is fastest at the oldest ages: populations aged 80 or over are expected to more than double, and the number of centenarians to increase more than fourfold by mid-century. In 2025, remaining life expectancy at age 60 varies substantially across regions, from 17.4 years in Africa to 24.9 years in Oceania, reflecting deep inequalities in access to health, social protection and economic opportunity.
Despite significant overall gains, healthy life expectancy has not kept pace with longevity in many settings. Low-income regions have achieved substantial gains in healthy life expectancy, while high-income countries have seen a marked slowdown in improvement after 2010, demonstrating that wealth alone does not guarantee healthy longevity, and that sustained policy investment remains essential regardless of income level.
Longevity as a Cross-Cutting Policy Imperative
While life expectancy has increased substantially, improvements in health span, the years of life lived in good health, have not always kept pace. Extending health span, not just lifespan, is increasingly recognized as the defining objective of health policy in an aging world. Social determinants account for 80 to 90 percent of health outcomes.
And evidence from communities around the world where people live measurably longer and healthier lives consistently points to the power of place, purpose, and social connection.
Advances in geriatric science and artificial intelligence are creating new opportunities to extend life expectancy further, yet without equitable access and sustained investment in prevention, these gains risk widening existing disparities. Longer lives also have profound implications for economic security and social protection. Globally, 3.8 billion people remain without any social protection coverage. And more than 57.8 percent of the world’s workers are in informal employment.
Women are disproportionately affected by longevity-related financial risk due to lower lifetime earnings, caregiving interruptions and longer average life expectancy.
Adapting labor markets, expanding lifelong learning opportunities and extending social protection coverage to informal workers are among the key policy responses needed to ensure that longer lives translate into sustained participation, security and dignity, grounded in the full enjoyment of human rights by all.
At the same time, policy design should draw on the knowledge, lived experiences and diverse perspectives of older persons themselves, whose participation is essential to developing responses that reflect the diversity of aging trajectories. In line with MIPAA, this means enabling older persons not only to take the lead in their own betterment, but also to participate actively in the betterment of society as a whole.
The macroeconomic stakes are significant. In the absence of reform, average Government deficits could rise from 2.4 percent of GDP in 2025 to around 9.1 percent by 2060.9 Yet when longer lives are accompanied by sustained health, productivity and participation, a longevity dividend becomes possible, and the policy challenge shifts from managing the costs of aging to investing in the conditions under which longer lives generate shared gains for all generations. Realizing this potential requires moving beyond fragmented, sector-by-sector responses.
Pension reforms too often proceed independently of health strategies; social protection systems were largely designed for shorter lives and formal employment; and preventive investments are rarely linked to fiscal objectives. Strengthening whole-of-government approaches involves clarifying mandates and ensuring longevity considerations are reflected across health, labor, fiscal and social protection systems, in line with the implementation of MIPAA. It also requires coordinated action beyond Government alone, engaging civil society, older persons and their representative organizations, the private sector, academia and researchers, each with a distinct role in translating policy into outcomes that ensure the age of longevity becomes an opportunity for all.
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