New World Health Organization figures place worldwide average lifespan back near the benchmarks recorded before the pandemic. Worldwide average lifespan stood at 73.3 years through 2023, the organisation reported — a figure that barely changed from the 73.4 years recorded in 2019, on the eve of the pandemic.

Measured in years of full health rather than total lifespan, healthy life expectancy at birth, known as HALE, reached 62.8 in 2023 — a figure that trails where it stood before the pandemic disrupted the trajectory of population health gains. Worldwide, extended lifespans do not automatically translate into years spent in good health.

Across multiple statements, the WHO has pointed to the pandemic's enduring toll on health systems and outcomes worldwide. The World Health Statistics report found that roughly a decade's worth of gains in how long people could expect to live were reversed across just a two-year span tied to the COVID-19 pandemic.

Worldwide, average lifespan contracted by nearly two years across the 2019–2021 period, settling at roughly 71.4 years — a figure the world had not recorded since 2012. Alongside that drop in overall lifespan, the number of years people spent living with illness or disability also contracted by roughly 1.5 years, pointing to a health burden that reached well beyond death rates alone.

Figures from the World Health Organization point to health systems that have not yet returned to the performance levels recorded before the pandemic. WHO figures released recently point to a growing divergence between how long people live and how many of those years they spend in good health.

Worldwide, WHO-derived analyses of health-adjusted life expectancy place the gap between total lifespan and years spent in good health at roughly a decade. Where once acute infections dominated the health landscape, the weight of illness has gradually moved toward conditions that persist and accumulate over a lifetime.

Chronic conditions — among them diabetes, heart disease, various cancers, dementia, and a range of mental health disorders — are recorded as the leading cause of death worldwide, with data pointing to their growing influence over how many years people spend in good health.

Global life expectancy figures compiled by the WHO reveal that the rebound from pandemic-era losses has played out unevenly depending on where in the world people live. Across some parts of the world, longevity at birth has climbed back to — or beyond — where it stood before the pandemic, whereas other populations face a slower path to recovery, shaped by fragmented healthcare infrastructure, uneven access to medical services, and disease burdens that have not eased.

In higher-income regions, total lifespan recovery has outpaced gains in years lived free of illness or disability, pointing to an expanding portion of life spent managing long-term health conditions. Global health conditions are on a tentative upward path, according to an assessment put forward by the World Health Organization.

Across populations worldwide, conditions that develop without an infectious trigger have increasingly cut into the share of life that people experience in reasonable physical wellbeing, stretching the gap between total lifespan and years lived without debilitating illness. WHO data places non-communicable diseases behind the preponderance of deaths recorded worldwide each year, with stroke, chronic respiratory conditions, and diabetes figuring among the illnesses driving that toll.

According to WHO assessments, non-communicable conditions are placing mounting pressure on health infrastructure worldwide, even as the relative weight of infectious disease threats continues to shift downward.

Defined as a population-level health indicator, HALE captures both the total span of a person's life and the proportion of that span spent free from illness or disability. According to WHO figures, healthy life expectancy at birth trails overall longevity by several years worldwide, pointing to a pattern where a notable portion of the final stage of life involves contending with chronic conditions, functional limitations, or diminished wellbeing.

Data released by the WHO on worldwide health trends point to longer survival rates for populations, even as the overall quality of life people experience while living those years has remained largely flat. Overall life expectancy has largely returned to where it stood before the pandemic, yet the number of years people can expect to live in good health has lagged behind that recovery.

Researchers use the term "healthspan gap" to describe a measurable divide between total years lived and the portion of those years spent in good health. Researchers have warned that without greater investment in preventive care, behavioural health programmes, and fair access to treatment, the disparity between population groups stands to grow across the decades ahead.