Add decades of healthy life.

Explore the evidence
Lifestyle layer

Life Expectancy — The summary statistic

Life expectancy is the simplest, most honest report card a country has. The 35-year spread between Spain (83.5) and the lowest-ranked nations is not mainly explained by healthcare spending — diet, smoking, alcohol, and social cohesion explain most of the gap. Blue Zone populations routinely add 7–10 years on top.

90.1
Ikaria, Greece — top-ranked
78.5
United States · falling since 2014
+10
Years Blue Zone populations gain

Countries on this metric

Highest (best)

01 Ikaria 90.1 yr 02 Loma Linda 88.5 yr 03 Okinawa 87.4 yr 04 Sardinia 86.2 yr 05 Nicoya 85.5 yr 06 Japan 84.3 yr 07 Switzerland 83.8 yr 08 Singapore 83.6 yr 09 Spain 83.5 yr 10 Italy 83.4 yr

Lowest (worst)

01 Lesotho 53.7 yr 02 Central African Republic 53.9 yr 03 Nigeria 54.7 yr 04 Somalia 57.4 yr 05 South Sudan 57.9 yr 06 Mali 59.3 yr 07 Chad 59.4 yr 08 Guinea-Bissau 59.7 yr 09 Eswatini 60.2 yr 10 Cameroon 60.3 yr

The Evidence

Global Burden of Disease 2019

Diet is the leading risk factor for premature death worldwide.
Fadnes et al., PLoS Med 2022

A switch from typical Western to optimal diet at age 20: +10 yrs life expectancy.
Blue Zones · Buettner 2008

5 longevity zones share ~95% plant diet, daily movement, social connection.

The Cause

Five behaviors — diet, smoking, alcohol, movement, and social connection — explain most of the international gap. Genetics contributes less than 25% to longevity in twin studies. The biggest single dietary lever: replacing red/processed meat with legumes and whole grains.

What You Can Do

  • Build daily natural movement (walking, gardening, stairs).
  • Keep a 70%+ plant diet across the week.
  • Maintain strong social ties — proven longevity factor.
  • Have a sense of purpose (ikigai, plan de vida).
  • Limit alcohol; avoid tobacco entirely.
Bottom line

You can't buy a Blue Zone. You build one — one habit, one meal, one walk at a time.

The evidence is unambiguous: diet is the single largest modifiable risk factor for the leading killers worldwide.
@stepanzivnustka →