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Top 10 Healthiest Countries in the World

Global health rankings draw on dozens of metrics including life expectancy at birth, infant mortality, universal healthcare coverage, obesity prevalence, and pollution levels. Japan tops the 2026 Global Health Security Index with a life expectancy of 84.3 years, driven by a diet rich in omega-3 fatty acids, universal healthcare, and the lowest obesity rate in the OECD at just 4.5%. These ten nations have built world-class healthcare systems, cultivated health-conscious cultures, and achieved remarkable longevity outcomes that serve as blueprints for the rest of the world.

2026153 viewsMar 25, 2026 Updated Oct 3, 2026

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#1
Japan
Japan achieves a life expectancy of 84.3 years through a traditional diet rich in fish and fermented foods, combined with a universal single-payer healthcare system. With an obesity rate of just 4.5%, the lowest in the OECD, Japan is the world leader in healthy longevity. The cultural practice of eating until 80% full and regular walking are credited as key drivers of exceptional population health outcomes.
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#2
Switzerland
Switzerland records a life expectancy of 83.8 years and consistently ranks at the top of the Bloomberg Healthiest Country Index. The Swiss healthcare model blends mandatory private insurance with strong government regulation, ensuring universal access to some of the world's best hospitals and physicians. Clean mountain air, an active outdoor lifestyle, and a high-quality diet further contribute to exceptional health outcomes.
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#3
Singapore
Singapore's life expectancy of 83.5 years reflects one of the most efficient healthcare systems in the world, spending far less per capita than Western nations while achieving superior outcomes. The city-state invests heavily in preventive care, urban green spaces, and rigorous food safety standards. Its Medisave savings scheme ensures that every resident accumulates funds specifically for healthcare needs throughout their working life.
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#4
Spain
Spain boasts a life expectancy of 83.4 years and is projected by the UN to become the world's longest-lived nation by 2040. The Mediterranean diet centered on olive oil, legumes, fish, and fresh produce is recognised by the WHO as one of the healthiest dietary patterns globally. Spain's universal public healthcare system provides free care to all residents with infant mortality below 3 per 1,000 live births.
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#5
South Korea
South Korea records a life expectancy of 83.3 years, driven by universal health insurance (NHI) coverage and a traditional diet rich in fermented vegetables, seafood, and low-fat protein. The country has one of the highest densities of hospitals and physicians in Asia, with rapid adoption of digital health technologies improving diagnostic accuracy. South Korea's OECD obesity rate of just 6.7% reflects deeply ingrained cultural attitudes toward balanced eating.
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#6
Iceland
Iceland achieves a life expectancy of 82.9 years with one of the cleanest environments on earth, ultra-low pollution levels, and pristine air and water quality. The Icelandic healthcare system is fully publicly funded and delivers near-universal access with some of the lowest maternal mortality rates globally. High fish consumption, geothermal outdoor bathing culture, and near-zero food insecurity all contribute to Iceland's exceptional health profile.
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#7
Italy
Italy records a life expectancy of 82.9 years, powered by the world-famous Mediterranean diet and the Servizio Sanitario Nazionale public healthcare system. Italian dietary traditions emphasise fresh pasta, olive oil, legumes, and seasonal vegetables, resulting in lower rates of cardiovascular disease than most Western peers. Sardinia is home to one of the five global Blue Zones where an extraordinary proportion of residents live past 100 years.
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#8
Sweden
Sweden achieves a life expectancy of 82.7 years through a publicly funded universal healthcare system, generous parental leave policies, and outstanding workplace safety regulations. The Swedish approach to mental health integration within primary care is regarded as a global model, and the country consistently ranks at the top of WHO measures for health equity. High consumption of whole grains, berries, and oily fish alongside active outdoor lifestyles are hallmarks of Swedish health culture.
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#9
Israel
Israel records a life expectancy of 82.6 years and operates a universal national health insurance system under which all residents are entitled to a comprehensive basket of medical services. Israel has among the lowest smoking rates in the developed world and invests heavily in medical research and biotechnology. The Israeli diet, influenced by Mediterranean and Middle Eastern traditions, is rich in vegetables, legumes, and olive oil, contributing to low rates of cardiovascular disease.
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#10
Australia
Australia achieves a life expectancy of 82.9 years and operates Medicare, a universal public health insurance scheme that gives all citizens access to hospital and primary care services. Australia has made significant strides in reducing smoking rates to below 11%, one of the lowest levels in the world, through aggressive public health campaigns and plain packaging legislation. The country's outdoor lifestyle, vast natural environment, and strong food safety standards all underpin its top-ten global health standing.
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Frequently Asked Questions About the World's Healthiest Countries

### What makes a country the healthiest in the world? Experts measure life expectancy at birth, infant mortality, universal healthcare access, obesity prevalence, air quality, and mental-health infrastructure. The countries on this list excel across nearly all of these dimensions at the same time.

### Which country ranks #1 for health in 2026? Japan ranks first with a life expectancy of 84.3 years, backed by universal healthcare coverage since 1961 and a traditional *washoku* diet low in saturated fat. Source: [WHO Global Health Observatory, 2025](https://www.who.int/data/gho).

### Why do Mediterranean countries like Spain and Italy score so highly? The Mediterranean diet — rich in olive oil, vegetables, legumes, and fish — is linked to lower rates of heart disease and diabetes. Combined with strong primary-care systems, both countries consistently achieve life expectancies above 83 years.

How Are These Health Rankings Determined?

Global health rankings like the Global Health Security Index evaluate countries across multiple dimensions including life expectancy at birth, infant mortality rates, healthcare coverage access, obesity prevalence, and environmental factors such as air and water quality. No single metric determines overall healthiness — a combination of these indicators provides a comprehensive picture.

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Frequently asked questions

What are the top 10 healthiest countries in the world?

The top 10 healthiest countries are typically Spain, Italy, Iceland, Japan, Switzerland, Sweden, Australia, Singapore, Norway, and Israel, based on the Bloomberg Healthiest Country Index or similar metrics.

What metrics are used to determine the healthiest countries?

The rankings consider factors such as life expectancy, quality of healthcare, prevalence of diseases, environmental factors, and lifestyle habits like diet and exercise, as compiled by organizations like Bloomberg or the United Nations.

Why do Mediterranean countries like Spain and Italy rank so high?

Mediterranean countries benefit from a diet rich in olive oil, fresh produce, and fish, combined with strong primary healthcare systems and lower rates of chronic diseases such as heart disease.

How often are these rankings updated?

The Bloomberg Healthiest Country Index is updated annually, while other reports like the Global Burden of Disease Study may be updated every few years, depending on the data source.