Life Expectancy by Country 2026: Where People Live the Longest

In 1900, the average human could expect to live to about 32 years of age. Today, global life expectancy at birth is approximately 73 years — more than double in just over a century. But this global average hides enormous variation. In Monaco, Japan, and Switzerland, the average person can expect to live past 84. In the Central African Republic and Chad, life expectancy remains below 55. This guide explores who lives the longest, who lives the shortest, why the gaps exist, and how humanity managed to add more than four decades to the average human lifespan in just 120 years.

The Countries With the Longest Life Expectancy

The top of the global life expectancy rankings is dominated by small, wealthy nations in Western Europe and East Asia, along with a few wealthy city-states. These countries share several characteristics: universal or near-universal healthcare, high incomes, low rates of obesity and smoking (especially in Asia), strong social safety nets, and cultures that emphasize preventive health practices.

Japan's longevity is particularly well-studied. Japanese people benefit from a diet that is low in saturated fat and rich in fish, vegetables, and fermented foods. They have some of the lowest obesity rates among wealthy nations. Japan's healthcare system provides universal coverage with low out-of-pocket costs, and the country has a strong culture of regular health checkups. Social cohesion and strong community ties — factors associated with lower stress and better mental health — are also thought to contribute. The Japanese concept of ikigai (a sense of purpose and reason to live) has attracted interest from longevity researchers worldwide.

The Countries With the Shortest Life Expectancy

The countries with the lowest life expectancies are concentrated in sub-Saharan Africa, where decades of conflict, extreme poverty, poor access to healthcare, and high rates of infectious disease have kept mortality rates high despite significant progress over the past 30 years.

The gap between the top and bottom of this list — over 34 years — represents one of the starkest inequalities in the human condition. A child born in Japan today can statistically expect to live into their mid-80s. A child born in the Central African Republic can expect just over 52 years. Both are human beings born in the same year, but their statistical life outcomes are worlds apart based purely on geography.

Why Does the United States Lag Behind Its Peers?

One of the most discussed anomalies in global health data is the United States. Despite being one of the wealthiest countries in the world and spending far more per person on healthcare than any other nation, the US has a life expectancy of around 77.5 years — below the OECD average and significantly below peers like Japan, Australia, Canada, and most of Western Europe.

This underperformance is not a new phenomenon. The US has lagged peer nations in life expectancy for decades, and the gap has widened in recent years. Researchers point to several interconnected causes:

• High rates of obesity: The US has among the highest obesity rates of any wealthy nation (over 42% of adults). Obesity is a major driver of heart disease, type 2 diabetes, and certain cancers — all leading causes of death.
• Gun violence: The US has a homicide and suicide rate by firearms that far exceeds peer nations, reducing average life expectancy by an estimated 1.1 years compared to if it matched European rates.
• Drug overdose crisis: The opioid and fentanyl crisis has caused tens of thousands of deaths per year among working-age Americans, significantly dragging down life expectancy statistics.
• Healthcare access gaps: Despite enormous healthcare spending, the US lacks universal coverage. Millions of Americans — particularly working-poor adults — delay or avoid care due to cost, leading to worse outcomes for treatable conditions.
• Infant and maternal mortality: The US has a significantly higher infant mortality rate and maternal mortality rate than comparable wealthy nations.

What Actually Determines How Long You Live?

Life expectancy at a national level is shaped by a complex web of factors that interact with each other. Understanding these factors helps explain both country-level differences and individual variation.

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  Healthcare Access and Quality

  Universal healthcare systems — which ensure everyone can access treatment regardless of ability to pay — are strongly associated with higher life expectancy. Early detection of cancer, heart disease, and diabetes through regular screenings saves enormous numbers of lives. Countries with strong primary care systems consistently outperform those that rely heavily on emergency care.
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  Diet and Nutrition

  Diets rich in vegetables, legumes, whole grains, and fish — and low in processed foods and added sugars — are consistently linked to lower rates of heart disease, cancer, and metabolic disorders. The Mediterranean diet (common in Spain, Italy, and Greece) and traditional Japanese diets are among the most studied longevity-promoting eating patterns in the world.
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  Smoking and Substance Use

  Tobacco use remains the single largest preventable cause of death globally, responsible for roughly 8 million deaths per year. Countries that have successfully reduced smoking rates — through taxation, advertising bans, and cultural change — have seen meaningful gains in life expectancy. Alcohol abuse and drug overdoses also significantly reduce average lifespan.
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  Income and Economic Security

  Poverty is one of the strongest predictors of early death. People with low incomes experience higher rates of stress, worse nutrition, reduced access to healthcare, exposure to environmental hazards, and greater rates of dangerous working conditions. Within countries, the gap in life expectancy between the richest and poorest communities can span 10 to 20 years.
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  Social Connection and Community

  Loneliness and social isolation have been shown to increase mortality risk by as much as 26%, comparable to smoking 15 cigarettes per day. Countries and communities with strong social ties, active community life, and multi-generational family structures tend to produce healthier, longer-lived populations. This is one reason the "Blue Zones" — regions with unusually high concentrations of centenarians — often feature tight-knit communities and a strong sense of collective purpose.

The Great Leveling: How the World Closed the Gap

Perhaps the most remarkable demographic story of the past century is how dramatically the global life expectancy gap has narrowed. In 1900, wealthy European nations had life expectancies of around 50 years while much of Africa, Asia, and Latin America hovered around 25–30 years. Today, the global gap — while still very real — is far smaller. Countries that were among the world's poorest in 1950 have added 25 to 30 years to their average lifespans.

The driving forces behind this transformation include:

• Vaccines and immunization: Mass vaccination programs have virtually eliminated diseases like smallpox and dramatically reduced deaths from polio, measles, diphtheria, and other killers that once devastated child populations worldwide.
• Antibiotics: The development and spread of antibiotics transformed previously fatal bacterial infections into treatable conditions.
• Clean water and sanitation: Investment in clean drinking water and proper sewage systems has saved hundreds of millions of lives by preventing cholera, typhoid, dysentery, and other waterborne diseases.
• HIV/AIDS treatment: The development of antiretroviral therapy transformed HIV from a death sentence into a manageable chronic condition, adding years to millions of lives — particularly in sub-Saharan Africa.
• Maternal and child health programs: Skilled birth attendance, prenatal care, and oral rehydration therapy for childhood diarrhea have dramatically reduced maternal and infant mortality.

The story of rising global life expectancy is, ultimately, one of humanity's greatest collective achievements. It reflects what becomes possible when science, public health infrastructure, and international cooperation work together at scale. The challenge now is closing the remaining gap — ensuring that the benefits of modern medicine and public health reach the last pockets of the world still living decades behind the global frontier.

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