Find Your Life Expectancy by Country: Insights from Dietium.com’s Research

Life expectancy serves as a crucial indicator of a nation's overall health, encompassing factors like healthcare quality, lifestyle choices, diet, and socioeconomic conditions. In 2025, global life expectancy stands at 73.5 years, with significant variations across countries. For instance, Hong Kong leads with an average life expectancy of 85.77 years, while countries like Somalia have a much lower average of 59 years 

Understanding Life Expectancy

Life expectancy at birth is the average number of years a newborn is expected to live, assuming that age-specific mortality rates remain constant throughout their lifetime. This metric reflects the overall health and living conditions of a country. However, it's essential to differentiate between life expectancy and healthy life expectancy—the latter indicates the number of years lived in good health, free from chronic diseases or disabilities.

Factors Influencing Life Expectancy

life expectancy by country Several determinants contribute to the disparities in life expectancy across nations:

• Healthcare Systems: Countries with robust healthcare infrastructures, such as Japan and Switzerland, tend to have higher life expectancies due to accessible and quality medical services.
  
  

• Diet and Nutrition: Nutrient-rich diets, like the Mediterranean diet prevalent in countries like Italy and Spain, are associated with lower risks of chronic diseases and longer lifespans.
  
  

• Physical Activity: Regular physical activity, integrated into daily routines, contributes to better cardiovascular health and increased longevity.
  
  

• Socioeconomic Status: Higher income levels often correlate with better access to healthcare, education, and healthier living conditions.
  
  

• Environmental Factors: Clean air, safe drinking water, and low pollution levels are crucial for maintaining health and extending life expectancy.
  
  

Dietium.com’s Life Expectancy Calculator

More at dietium.com offers a personalized Life Expectancy Calculator that estimates an individual's potential lifespan based on various factors, including lifestyle choices, diet, physical activity, and medical history. This tool provides insights into how personal habits align with national averages and highlights areas for improvement.

Global Life Expectancy Rankings (2025)

According to the latest data, the top 10 countries with the highest life expectancy in 2025 are:

1. Monaco – 86.5 years
   
   

2. San Marino – 85.8 years
   
   

3. Hong Kong – 85.6 years
   
   

4. Japan – 84.8 years
   
   

5. South Korea – 84.4 years
   
   

6. Saint Barthelemy – 84.4 years
   
   

7. French Polynesia – 84.2 years
   
   

8. Andorra – 84.2 years
   
   

9. Switzerland – 84.1 years
   
   

10. Australia – 84.1 years
    
    

These nations benefit from factors like advanced healthcare systems, healthy diets, and active lifestyles.

Countries with the Lowest Life Expectancy

Conversely, the countries with the lowest life expectancy in 2025 include:

1. Somalia – 59 years
   
   

2. Mali – 60.7 years
   
   

3. Guinea – 60.9 years
   
   

4. Benin – 61 years
   
   

5. Burkina Faso – 61.3 years
   
   

6. Niger – 61.4 years
   
   

7. Sierra Leone – 62 years
   
   

8. Democratic Republic of Congo – 62.1 years
   
   

9. Ivory Coast – 62.1 years
   
   

10. Nauru – 62.3 years
    
    

These lower life expectancies are often attributed to factors such as limited access to healthcare, poor nutrition, political instability, and inadequate sanitation.

The Role of Diet in Longevity

Diet plays a pivotal role in determining life expectancy. Research indicates that adherence to healthy dietary patterns can prevent the development of non-communicable diseases, thereby affecting life expectancy. For instance, a study using data from the UK Biobank found that sustained dietary changes from unhealthy patterns to those recommended by the Eatwell Guide were associated with significant gains in life expectancy 

Conclusion

Life expectancy varies significantly across countries, influenced by a complex interplay of healthcare quality, lifestyle choices, diet, and socioeconomic factors. While some nations enjoy high life expectancies due to favorable conditions, others face challenges that shorten lifespans. Tools like Dietium.com’s Life Expectancy Calculator can provide individuals with personalized insights, empowering them to make informed decisions to enhance their health and longevity.

By understanding the factors that contribute to life expectancy, individuals can adopt healthier lifestyles, advocate for improved healthcare policies, and contribute to creating environments that promote longer, healthier lives for all.