Obesity prevalence

Japan's obesity rate is seven times lower than Hungary's, revealing a 28.6-point chasm between the healthiest and heaviest nations.

OECDUpdated Dec '25

Summary

Leanest 5 Countries by Obesity

1Japan
4.6%
2South Korea
5.9%
3Indonesia
9.6%
4Romania
10.5%
5Italy
11.0%
Dataset Median
18.5%

Most Obese 5 Countries by Obesity

31South Africa
28.9%
32New Zealand
31.3%
33United States
32.6%
34Argentina
32.9%
35Hungary
33.2%

Gap

28.6

Hungary-Japan obesity gap spans 28.6 points

Leader

4.6%

Japan leads with 4.6% obesity rate

Cluster

5.9%

East Asia dominates lowest obesity rates

Data

35 results

1Japan4.6%
2South Korea5.9%
3Indonesia9.6%
4Romania10.5%
5Italy11.0%
6Norway13.0%
7Thailand13.1%
8Bulgaria13.6%
9Sweden13.7%
10Netherlands14.1%

Map

Obesity prevalence

33.2%
4.6%

Insights

Generated automatically using AI

Gap

28.6

Hungary leads global obesity at 33.2% while Japan maintains just 4.6%

Leader

4.6%

Japan maintains world's lowest obesity rate at just 4.6% of population

Cluster

5.9%

East Asian nations dominate top rankings with Japan and South Korea

Outlier

32.6%

United States ranks 33rd globally with 32.6% obesity prevalence

Comparison

7x

Hungary's obesity rate is seven times higher than Japan's baseline

Methodology

This dataset is sourced from the OECD through its official SDMX data service.
Rankdat does not alter or model the underlying values — we only clean formats, standardize country names, and reshape the data for visualization.

OECD compiles these indicators from a mix of sources including national statistical offices, international household surveys (such as Gallup World Poll, EU-SILC, ISSP), and harmonised administrative datasets.
Each indicator follows the definitions and structure specified in the OECD’s Data Structure Definition (DSD) for this dataflow.

Because indicators originate from different countries and surveys, collection years, sampling methods, and questionnaire wording may vary. OECD applies harmonisation rules to improve comparability, but differences in national methodology may still affect cross-country comparisons.

Full definitions, data collection notes, and quality documentation are available through the OECD metadata portal linked in the Sources section.

Source