Wellbeing and Mortality
Does happiness predict longevity? Explore the relationship between self-reported life satisfaction and life expectancy across 164 countries. Examine the Easterlin Paradox and the surprising link between national wellbeing and suicide rates.
| Country | Life Satisfaction | Life Expectancy | GDP/Capita | Region |
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Life Satisfaction and Mortality: A Global Analysis
Exploring the complex relationship between national wellbeing and longevity
The Wellbeing and Mortality explorer examines how self-reported life satisfaction correlates with life expectancy across 164 countries using data from the World Happiness Report and the World Bank. Life satisfaction is measured using the Cantril Self-Anchoring Scale, where respondents rate their current lives on a scale of 0 (worst possible) to 10 (best possible). At the country level, life satisfaction shows a moderately strong positive correlation with life expectancy (r ≈ 0.74), though this relationship is heavily confounded by national wealth.
The Six Pillars of Wellbeing
GDP, social support, freedom, generosity, corruption, and health — the World Happiness Report framework
The World Happiness Report decomposes national happiness into six pillars: GDP per capita, social support, healthy life expectancy, freedom to make life choices, generosity, and perceptions of corruption. Of these, social support (having someone to count on in times of trouble) and healthy life expectancy show the strongest independent associations with life satisfaction. Nordic countries consistently rank highest by combining strong social safety nets, low corruption, high interpersonal trust, and universal healthcare — demonstrating that happiness is not purely an economic phenomenon.
The Easterlin Paradox, proposed in 1974, observes that within a country at any point in time richer people are happier, but over time, increases in national income do not necessarily lead to increases in average happiness. The GDP vs life satisfaction chart reveals a logarithmic curve that flattens at higher income levels, suggesting that beyond roughly $20,000–30,000 per capita, additional wealth yields diminishing happiness returns. This parallels the Preston Curve’s similar finding for health, hinting at a common saturation mechanism.
The counter-intuitive finding that happier nations sometimes have higher suicide rates (documented by Daly et al., 2011) highlights the ecological fallacy. This does not mean happiness causes suicide; rather, high average happiness may intensify contrast effects for unhappy individuals, Nordic countries experience long dark winters linked to seasonal depression, and wealthier countries tend to have more complete suicide reporting. This pattern underscores the importance of distinguishing population-level correlations from individual-level causal mechanisms.
Is there a link between happiness and life expectancy?
Yes. At the country level, life satisfaction shows a moderately strong positive correlation with life expectancy (r ~ 0.74). Happier countries tend to have longer-lived populations, though this relationship is heavily confounded by national wealth, healthcare access, and social infrastructure.
What is the Easterlin Paradox?
The Easterlin Paradox, proposed by economist Richard Easterlin in 1974, observes that at a point in time richer people are happier, but over time increases in national income do not necessarily lead to increases in average happiness. The GDP vs life satisfaction chart shows a logarithmic curve that flattens at higher income levels.
Why do some happy countries have high suicide rates?
Several hypotheses exist. High average happiness may intensify feelings of isolation for those who are unhappy (the contrast effect). Nordic countries with high life satisfaction also experience long dark winters associated with seasonal depression. Wealthier countries also tend to have more complete suicide reporting. This pattern does not imply that happiness causes suicide.
What data source is used for life satisfaction?
Life satisfaction is measured using the Cantril Self-Anchoring Scale from the Gallup World Poll, as reported in the World Happiness Report. Respondents rate their current life on a 0-10 ladder. We use the latest available year for each country, covering 164 nations.
Which factor matters most for happiness — wealth or social support?
According to the World Happiness Report, social support (having someone to count on) and healthy life expectancy are stronger independent predictors of life satisfaction than GDP per capita alone. This helps explain why some middle-income Latin American countries report happiness levels comparable to much wealthier nations — strong family and community bonds compensate for lower material wealth.
Why do Nordic countries consistently rank as the happiest?
Nordic countries (Finland, Denmark, Iceland, Sweden, Norway) combine strong social safety nets, low corruption, high interpersonal trust, universal healthcare and education, relatively low inequality, and high freedom to make life choices. These structural factors create conditions where most citizens have high baseline life satisfaction, rather than any single factor explaining their top rankings.
Can happiness actually improve health outcomes?
Individual-level research suggests positive affect is associated with better immune function, lower inflammation, and reduced cardiovascular risk. However, at the country level, the causal arrow likely runs in both directions: healthier societies are happier, and happier individuals tend to adopt healthier behaviours. Disentangling these effects requires longitudinal and experimental designs beyond what cross-country comparisons can provide.