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Life expectancy by world region: what it really means

Published on 17 October 2026 · Updated on 28 October 2026 · Sandglass Team

When it is said that life expectancy in a place is 80 years, many people understand that nobody will live longer. That is not so. This article explains what that figure really measures and why it changes so much from one region to another.

What life expectancy at birth is

Life expectancy at birth is the average number of years a newborn would live if, throughout their life, the current mortality rates of their population stayed the same. It is a statistical average, not an individual prediction or a maximum age.

That is why a region with a life expectancy of 75 years has people who die at 30 and people who pass 100. The average summarises the whole population, and it is heavily influenced by how many babies and children die in the first years of life.

Indicative figures by region

Sandglass groups the world into nine large regions and uses a rounded life expectancy value for each. They are approximations based on public statistics from bodies such as the United Nations, the World Health Organization and the World Bank, and they serve as a starting point that each person can adjust.

Within each region there are huge differences between countries, between rural and urban areas and between social groups. A regional average is a useful simplification, but it never describes a specific person.

Why there is such a difference between regions

There is no single cause. The factors most associated with a higher life expectancy are:

• Access to healthcare: vaccination, childbirth care, treatment of chronic diseases and emergency services.
• Nutrition and safe water: sufficient food and adequate sanitation drastically reduce infectious diseases.
• Education and income: people with more resources and schooling tend to live longer and in better health.
• Child mortality: every child who does not reach the age of five lowers the average of the whole population.
• Conflict and safety: wars, violence and instability shorten life directly and indirectly.
• Lifestyle and chronic diseases: in high-income regions, a sedentary life, tobacco or diet weigh more than infections.

If you have already reached a certain age, you expect to live longer than the average

A surprising detail: life expectancy "at birth" is not the one that applies to someone who is already 40 or 60. Anyone who has made it through childhood and youth has left the highest mortality risks behind, so their expected total years are higher than the figure at birth. That is why Sandglass lets you adjust life expectancy with a slider between 55 and 95 years: you can bring it closer to your personal situation instead of sticking to the regional average.

How to use these figures well

• Use them as an order of magnitude, not as a forecast.
• They have no medical value: your health, genetics and habits matter more than the average of your region.
• They are mainly useful for gaining perspective on time and deciding what you want to invest it in.

To look up detailed official data, you can visit the statistical portals of the United Nations (World Population Prospects), the WHO Global Health Observatory and the World Bank indicators.

Life expectancy and healthy life expectancy

Living more years does not necessarily mean living them in good health. That is why the World Health Organization also publishes healthy life expectancy, which estimates how many of those years are lived without serious illness or disability. Worldwide, this figure is several years lower than total life expectancy, with a gap that usually ranges between eight and ten years, and it varies a lot from country to country.

The practical takeaway is clear: besides asking how long we can live, it is worth asking how many of those years we want to live independently. And that second part depends far more on habits and prevention than the first.

How life expectancy has changed over time

At the beginning of the 20th century, world life expectancy was around thirty-something years; today it is above seventy. The jump is not because adults went from dying at 40 to living until 80, but mainly because of a spectacular reduction in child mortality and infectious diseases thanks to vaccines, antibiotics, safe water and better nutrition.

This nuance dismantles a very widespread myth: the idea that in the past "people died at 30 or 40". What happened was that many children did not reach adulthood, which dragged the average down. Anyone who survived childhood had a good chance of reaching old age, although with much greater risks than today.

Differences between women and men

In practically every region, women have a higher life expectancy than men; worldwide the gap is around four or five years. It is attributed to a combination of biological and behavioural factors (lower exposure to certain occupational, traffic or tobacco and alcohol risks). In some regions the gap is larger and in others it has narrowed in recent decades.

Sandglass does not distinguish by sex in order to keep the tool simple and avoid assumptions: if you want to reflect it, adjust the life expectancy slider up or down by a couple of years.

Common myths about life expectancy

• "If the average is 80, I will not reach 90". False: the average does not limit anyone, and the probability of exceeding it is considerable.
• "Genetics decides everything". Twin studies suggest that genetics explains a relevant part, but not the largest, of the differences in longevity; environment and habits weigh a lot.
• "Statistics tell me how long I will live". No: they describe past populations, not the future of one specific person.
• "Living longer is always better even in poor health". That is why healthy life expectancy is also measured.

Related tools

If you want to turn these figures into something personal, try the exact age calculator, the visual calendar Your life in weeks or the main Sandglass tool, which splits your remaining time between activities.