How the World Lives
Explore how lifestyle factors — obesity, tobacco use, alcohol consumption, physical inactivity, diabetes, and hypertension — vary across countries and correlate with life expectancy.
| Country | Life Exp. | Obesity % | Tobacco % | Alcohol L | Inactivity % | Diabetes % | Hypertension % |
|---|---|---|---|---|---|---|---|
Lifestyle Risk Factors and Global Health
How daily habits shape population-level health outcomes
Non-communicable diseases (NCDs) now account for over 70% of global deaths, and many of the key risk factors driving these conditions are rooted in lifestyle. Obesity, tobacco use, alcohol consumption, physical inactivity, and poor diet collectively contribute to cardiovascular disease, diabetes, cancer, and chronic respiratory conditions. The Lifestyle Explorer brings together data from the WHO, World Bank, and Global Burden of Disease project to show how over 200 countries compare across key lifestyle and metabolic health indicators.
The Big Five Behavioural Risk Factors
Tobacco, alcohol, obesity, inactivity, and diet — the modifiable drivers of mortality
Tobacco remains the single largest preventable cause of death globally, killing over 8 million people annually. Smoking rates vary enormously — from under 5% in parts of Sub-Saharan Africa to over 40% in some Eastern European and East Asian nations. Successful tobacco control (taxation, advertising bans, plain packaging) has driven dramatic declines in high-income countries, but the tobacco industry has shifted marketing to low- and middle-income countries where regulation is weaker.
Alcohol contributes to over 200 disease and injury conditions, including liver cirrhosis, several cancers, and road traffic injuries. Eastern Europe and Central Asia have historically had the highest per-capita consumption, partly explaining the mortality crisis in the former Soviet states. Obesity has tripled since 1975 and now affects over 650 million adults worldwide, driving epidemics of type 2 diabetes and cardiovascular disease. Pacific Island nations and the Gulf states have the highest rates, but obesity is rising fastest in South Asia and Sub-Saharan Africa as diets westernise and urbanisation increases.
Physical inactivity is responsible for roughly 3.2 million deaths per year (WHO estimate), with prevalence highest in high-income and urbanised countries where sedentary occupations dominate. Diet quality — particularly low fruit and vegetable intake, high sodium, and high processed-meat consumption — is the risk factor with the largest attributable disease burden in the GBD framework, contributing to more deaths than any single behavioural factor including smoking.
How to Use the Lifestyle Explorer
Maps, scatter plots, and rankings for cross-country comparison
Use the interactive map to see geographic patterns for each indicator — notice how obesity clusters in the Americas and Pacific, while tobacco use concentrates in East Asia and Eastern Europe. The scatter plot lets you test correlations between any lifestyle indicator and life expectancy. The data table ranks all countries and allows sorting and filtering. While these correlations reveal important associations, they should not be interpreted as direct causal relationships: a country’s health outcomes are shaped by economic development, healthcare access, cultural norms, urbanisation, and policy interventions working together.
Which countries have the highest obesity rates?
Pacific Island nations such as Nauru, Palau, and the Cook Islands consistently rank among the highest for adult obesity prevalence. Among larger nations, the United States, Saudi Arabia, and Kuwait have some of the highest rates. Use the Lifestyle Explorer to sort all countries by obesity prevalence.
How does physical inactivity affect life expectancy?
Physical inactivity is a leading modifiable risk factor for premature death. The WHO estimates that insufficient physical activity is responsible for roughly 3.2 million deaths per year globally. Countries with higher rates of physical inactivity tend to have higher prevalences of cardiovascular disease, diabetes, and certain cancers.
What lifestyle factors are most strongly correlated with life expectancy?
At the population level, tobacco use and alcohol consumption show notable negative correlations with life expectancy in some regions. Obesity and physical inactivity also correlate with lower life expectancy, though the relationship is moderated by access to healthcare and economic development. Use the scatter plot above to explore each factor interactively.
Where does the lifestyle data come from?
The lifestyle indicators are compiled from the WHO Global Health Observatory, World Bank Health Indicators, IHME Global Burden of Disease Study, and Our World in Data. Obesity, tobacco, and alcohol data come primarily from WHO country profiles; diabetes and hypertension prevalence from the NCD Risk Factor Collaboration.
Why do some wealthy countries have worse lifestyle health metrics?
Economic development brings dietary shifts toward processed foods, more sedentary occupations, and increased access to alcohol and tobacco. The United States, for instance, has both high GDP and high obesity rates. However, some wealthy nations (Japan, South Korea, Switzerland) maintain excellent lifestyle metrics through cultural dietary patterns, strong public health policy, and active transportation infrastructure.
Is diet really a bigger risk factor than smoking?
In the GBD comparative risk assessment framework, dietary risks (low fruit and vegetable intake, high sodium, high processed meat) collectively contribute to more attributable deaths globally than tobacco. However, at the individual level, smoking carries a higher relative risk per person. The distinction is that poor diet affects a much larger proportion of the global population, making its total burden greater despite a lower per-person risk.
Why is Eastern Europe an outlier for alcohol-related mortality?
Eastern European countries, particularly Russia, Belarus, and the Baltic states, have historically had very high alcohol consumption, especially spirits. This is a major driver of the male mortality crisis in the region, contributing to high rates of liver disease, cardiovascular deaths, accidents, and violence. The post-Soviet economic collapse amplified these patterns, though some countries have since introduced successful alcohol control policies.