What is it about?

This study estimated trends and distributions of mean BMI at the prefecture level in Japan from 1975 to 2019.

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Why is it important?

Average BMI of residents is essential information to plan, implement, and evaluate national and local public health programs to improve their lifestyles and prevent obesity.


Although mean BMI is generally lower in Japan than in other countries, there is a substantial difference in BMI levels across prefectures. Particularly mean BMI in southwest prefectures has been rising more rapidly than in other prefectures. Motorization as well as westernization of diets might be a contributor to the trends and distributions of prefectural BMI.

Dr Nayu Ikeda
National Institutes of Biomedical Innovation, Health and Nutrition

Read the Original

This page is a summary of: Trends and Disparities in Adult Body Mass Index Across the 47 Prefectures of Japan, 1975–2018: A Bayesian Spatiotemporal Analysis of National Household Surveys, Frontiers in Public Health, May 2022, Frontiers,
DOI: 10.3389/fpubh.2022.830578.
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