Countries with the lowest obesity rates and what the world can learn from them

At a time when obesity has become one of the world’s biggest health concerns, a few countries still report remarkably low obesity rates. According to data from the World Health Organization (WHO) and the World Obesity Federation, nations such as Vietnam, Japan, and Ethiopia continue to maintain some of the leanest populations globally. But the reason is not simply “healthy eating.” It is deeply tied to culture, movement, food systems, urban design, and even family habits.

Vietnam is often listed among the countries with the world’s lowest obesity rates. Meals there are traditionally rich in vegetables, herbs, soups, rice, and fresh ingredients. Portion sizes also tend to be smaller than in many Western nations.
Street food culture in Vietnam surprisingly plays a positive role too. Many dishes are prepared fresh instead of heavily processed. Walking and two-wheeler commuting also keep daily activity levels naturally high.

A famous Japanese saying fits well here: “Hara hachi bu” eat until 80% full. The philosophy quietly exists across several Asian food cultures.

Japan consistently reports one of the lowest obesity rates among developed countries. Experts often credit this to portion control, seafood-rich diets, regular walking, and strong public health awareness.

Children in Japanese schools are also taught nutrition from an early age. School lunches are carefully planned, and eating is treated as part of education rather than just routine feeding.

The Japanese government has also run nationwide health campaigns focused on waist measurements and metabolic health.

Ethiopia often appears in global low-obesity rankings, but the reality is more complicated. In several lower-income nations, low obesity rates are linked not only to active lifestyles but also to food insecurity and undernutrition.

This highlights an important truth: low obesity does not automatically mean perfect health.

Researchers from the WHO and The Lancet have repeatedly warned that many countries now face a “double burden” undernutrition and obesity existing side by side.

One common thread among countries with low obesity rates is lower dependence on ultra-processed food. Traditional meals still dominate daily life.

In many high-obesity countries, convenience foods, sugary beverages, and oversized portions have slowly replaced home-cooked meals. Meanwhile, nations with lower obesity levels often preserve slower eating habits and community dining traditions.

In countries with lower obesity rates, exercise is often not treated as a separate activity. Walking to markets, cycling, climbing stairs, and active commuting are simply part of daily living.

Urban planners call this “incidental movement.” It may sound small, but over decades it shapes public health in powerful ways.

In places like Japan and Vietnam, cities are often designed for pedestrians and public transport users. That naturally reduces sedentary lifestyles.

Family eating habits also matter. In many low-obesity countries, meals are still shared at fixed times, and overeating is socially discouraged.

Contrast that with rising trends of isolated eating, late-night snacking, and constant food delivery culture seen across many urban regions worldwide.
The simplicity of that advice still reflects what many low-obesity nations practice naturally.

There is no single formula. Genetics, economy, culture, and access to food all play a role. But experts agree on one thing: obesity is not only an individual issue. It is shaped by environments, policy decisions, marketing, and urban lifestyles.

The growing concern is serious. WHO-backed studies now estimate that more than one billion people globally are living with obesity.

That makes the habits of low-obesity countries worth studying carefully, not as trends, but as long-term cultural lessons.

Disclaimer: This article is for informational purposes only and should not be considered medical advice. Obesity is influenced by genetics, lifestyle, socioeconomic conditions, and access to healthcare. Readers should consult qualified healthcare professionals for personalised health guidance.

​