The longevity shift

The world is living longer. The opportunity is to live better.

Authoritative projections reveal a historic change in the global age structure, with major implications for health, technology and society.

Reviewed August 2026

The numbers

A demographic transformation already underway.

WHO and the United Nations project rapid growth in older populations. These figures are projections, not guarantees, and depend on future mortality, fertility and migration patterns.

A changing age profile

Three milestones, one global shift.

Population ageing is progressing at different speeds across countries, but every region is preparing for a larger share of older people.

Mid-2030s

Age 80 and older exceeds infancy

The UN projects about 265 million people age 80 or older, more than the number of infants under age one.

2050

Most older adults live in emerging economies

WHO projects that 80% of older people will live in low-income and middle-income countries.

Late 2070s

Older adults exceed children

The global population age 65 and older is projected to surpass the population under age 18.

Why it matters

Longevity changes what society must design for.

The significance is not limited to healthcare. Longer lives reshape products, work, cities, finance and the daily systems that help people remain independent.

Health systems

More people living into later life increases the need for prevention, integrated care, rehabilitation and long-term support.

Personal technology

Accessible sensing, feedback and assistive tools can help people understand patterns and maintain function.

Healthy environments

Communities, transport and housing must support mobility, connection and participation at every age.

Responsible innovation

Longevity products need credible evidence, transparent claims and a clear distinction between wellness and medical treatment.

Projection note. Demographic forecasts are updated as new population data become available. They describe plausible population trajectories, not fixed outcomes.

From lifespan to healthspan

Longer life is only part of the picture.

See the health measures that reveal the difference between living longer and living longer in good health.

View health statistics

Sources and methodology

Population data from global public-health authorities.

This page presents global population estimates and projections for general information. It is not medical, financial or investment advice.