Obesity Acceleration Hit 109 Countries in 2024 as Rich Nations' Rates Flattened
Updated
Updated · STAT · May 13
Obesity Acceleration Hit 109 Countries in 2024 as Rich Nations' Rates Flattened
2 articles · Updated · STAT · May 13
A Nature analysis found obesity velocity in 2024 reached its highest level in 45 years for men in 109 of 200 countries and for women in 84, with the fastest gains concentrated in low- and middle-income nations.
Data from 232 million people across more than 4,000 studies showed most high-income countries have seen obesity growth level off, while France, Italy and Portugal may be starting to decline.
The U.S. stood out: child and teen obesity has plateaued, but adult rates are still rising, leaving prevalence at 20% to 23% for children and 40% to 43% for adults—among the highest in wealthy Western countries.
Researchers linked diverging paths to urbanization, reduced physical activity and a shift toward ultra-processed foods, while saying it is still too early to judge whether obesity drugs will alter national trends.
Some outside experts questioned whether focusing on year-to-year 'velocity' adds much beyond the established picture that obesity is still climbing in most places, even as the study argues the old 'pandemic' label masks widening cross-country differences.
Why are obesity rates falling in wealthy nations but accelerating across the developing world?
As new weight-loss drugs become common, will cultural dietary habits like Japan's become obsolete?
How did a 50-year-old US farm bill help shape the modern global diet and obesity crisis?
The Global Obesity Split: Accelerating Crisis in LMICs, Stabilization in High-Income Countries (2026 Report)
Overview
A major study published in Nature in May 2026 has transformed the understanding of global obesity. It refutes the old idea of a single, uniform 'global obesity pandemic' and instead reveals a sharp divide: while high-income countries are seeing obesity rates stabilize or decline, over 100 low- and middle-income countries face a rapid and alarming rise. This marks a turning point, showing that the world is now dealing with multiple, distinct obesity epidemics that require different solutions. The outdated view of a monolithic crisis is replaced by a call for tailored, region-specific responses.