The drop: pandemic reverses decades of progress
Between 2019 and 2021, global average life expectancy at birth fell by approximately 1.8 years. This was the sharpest decline recorded since World War II and erased roughly six years of improvement. The WHO World Health Statistics 2023 and the UN WPP 2024 both document the same pattern: a V-shaped shock followed by partial recovery.
Some countries experienced far sharper falls. Peru lost over 6 years of life expectancy between 2019 and 2021 — the largest national decline on record in a single two-year period, driven by overwhelmed hospital capacity and early variant exposure before vaccines were available. Bolivia, Ecuador, and Russia each lost 4+ years. The United States lost nearly 3 years — falling to 76.4 in 2021 from 79.1 in 2019 — the worst US performance since the 1940s. The CDC National Center for Health Statistics noted that COVID-19, drug overdose, and heart disease together accounted for nearly all of the US decline.
At the other end, some countries saw minimal or no decline. New Zealand, Australia, South Korea, and Taiwan — which suppressed the first two waves effectively — maintained life expectancy near pre-pandemic levels through 2020–21. Their rebounds post-Omicron were correspondingly smaller.
Excess mortality: the true scale
Reported COVID deaths undercounted the true toll because many deaths were registered as pneumonia, cardiac events, or other causes, particularly in countries with weaker civil registration systems. The WHO estimated approximately 14.9 million excess deaths globally in 2020–2021 — roughly 2–3 times the number of confirmed COVID deaths over the same period. The Economist's excess-mortality tracker put the figure higher, at roughly 20 million by end-2021.
The Human Mortality Database Short-Term Mortality Fluctuations (STMF) series, which tracks weekly death counts across 40 high-income countries, showed that excess mortality in 2021 exceeded 2020 in many Eastern European countries despite vaccines being available — a consequence of low uptake. Bulgaria, Romania, and Russia had vaccination rates below 30% by the end of 2021 and recorded some of the highest all-cause excess-mortality ratios of any country.
The recovery: fast in the North, slow in the South
By 2023, most high-income countries had largely recovered to or above their 2019 life-expectancy levels. The UK (81.3 in 2019 → 80.7 in 2021 → 81.0 in 2023), France, Germany, and Japan all show near-complete rebounds. The US recovery is slower: 2023 estimates put US life expectancy at around 77.5, still below the 2019 figure of 79.1, partly due to persistently elevated drug overdose deaths.
Middle-income countries (Brazil, South Africa, Mexico) recovered more slowly, largely completing their rebounds by 2023. Low-income countries — where vaccine coverage remained below 20% as late as 2022 due to supply constraints, cold-chain limitations, and vaccine hesitancy — have not fully recovered. Sub-Saharan Africa's aggregate life expectancy, which had been rising steadily from 52 in 2000 toward 63 in 2019, fell back to around 61 in 2021 and was still below 63 as of 2023 estimates.
The divergence reinforces the core finding of the WHO World Report on Ageing and Health and IUSSP 2021 discussions: health system capacity and vaccination access are the primary mediators of mortality recovery speed. Countries that invested in health infrastructure over the prior decade bounced back fastest.
Long-term implications for population projections
The COVID shock has already been incorporated into the UN WPP 2024 medium-variant projections, which treat 2020–2021 as a one-off shock and project a continuation of the long-term mortality decline trend. Global life expectancy is projected to reach 77.3 by 2050 and 82.3 by 2100 in the medium variant.
But the pandemic raised three structural concerns that the projections cannot fully model. First, long-COVID — affecting an estimated 65–200 million people globally according to the WHO Europe — may create a persistent drag on healthy life years even as death rates recover. Second, healthcare backlogs from deferred cancer screenings, cardiovascular care, and mental health treatment are expected to produce an elevated chronic-disease burden into the late 2020s. Third, in low-income countries, the pandemic disrupted childhood vaccination programmes (measles, polio, DTP), which WHO projects will increase child mortality from vaccine-preventable diseases through 2025–2027.
For the big-picture context, see the life expectancy glossary entry covering the 20th century rise from ~29 to 73, and the UN WPP 2024 ageing article on how longer lives reshape dependency ratios and pension systems.
Frequently asked questions
How much did COVID-19 reduce global life expectancy?
The global average fell by approximately 1.8 years between 2019 and 2021, from 72.8 to roughly 71.0. The US saw a drop of nearly 3 years; Peru lost over 6 years. These are the largest single-event declines since World War II. Source: WHO World Health Statistics 2023.
Has life expectancy recovered to pre-COVID levels?
Globally, the average has mostly recovered by 2023–24 to near 73 years. However, recovery is uneven: high-income countries largely bounced back by 2022; middle-income countries by 2023; but many low-income countries — where vaccination coverage remained below 20% — have not fully recovered. See the UN WPP 2024 for country-level data.
What is the current global life expectancy (2024)?
Approximately 73.3 years globally (UN WPP 2024 medium variant). Japan leads at around 84.3 years; Hong Kong SAR and Switzerland are at 84+ as well. Several sub-Saharan African countries remain below 60 years, reflecting continuing structural health challenges.
Why did some countries recover faster than others?
Key factors: vaccination coverage speed (Israel, UK, and UAE vaccinated 70%+ by mid-2021), healthcare system capacity, and excess-mortality burden in the first wave. Eastern Europe and Russia, with low vaccination uptake, saw the slowest rebounds. See the Human Mortality Database for country-level weekly mortality tracking.