What's happened
A global study shows obesity has continued to rise in many countries since 1980, but several high‑income nations have seen a slower increase, plateau, or slight decline by 2024. Trends vary by country, sex, and age, with low‑ and middle‑income countries still reporting rising rates. Experts urge unpacking country‑specific drivers and considering policy responses and medicines.
What's behind the headline?
Key takeaways
- Obesity prevalence has not followed a uniform global path; many high‑income countries exhibit a plateau or slight decline in adults, while low- and middle-income nations continue to rise.
- Country‑level factors—such as body image norms, school meals, and policy interventions—shape outcomes beyond universal drivers like unhealthy food access and physical inactivity.
- The potential role of weight‑loss medicines is noted as a area to watch for impact, particularly in the US and UK.
Implications for readers
- Even with global progress in some places, the burden remains uneven; local health strategies should tailor interventions.
- Policymakers may consider applying successful measures from plateauing countries to other contexts, while recognising cultural and economic differences.
Limitations
- Observational data cannot prove causation; country comparisons rely on diverse data sources and methods.
How we got here
Researchers analysed data from 4,050 population studies including 232 million participants aged five and above, covering 1980–2024. The study in Nature highlights divergent trends: some high‑income countries show slower growth or plateau, while many lower‑ and middle‑income countries see continued rises. Factors vary by country and can include social norms, policy interventions, and access to treatments. Experts say understanding country‑specific drivers is crucial for effective public health strategies.
Our analysis
The Guardian (Nicola Davis) reports on a Nature study analysing 4,050 population studies and 232 million participants; Denis Campbell covers caregiving and cognitive decline; The Independent and The Guardian discuss working hours and obesity links; The Mirror, NY Post present related opinions. Primary source: Nature study via Nature journal. specific citations: Guardian May 13, 2026; Guardian May 13, 2026; Independent May 11, 2026; Guardian May 10, 2026; Mirror May 10, 2026; NY Post May 10, 2026.
Go deeper
- What country is seeing the strongest plateau in obesity?
- Could weight‑loss medicines shift these trends?
- What policy changes could be most effective where obesity remains high?
More on these topics
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The University of Queensland - Public university in Brisbane, Australia
The University of Queensland is a public research university located primarily in Brisbane, the capital city of the Australian state of Queensland.
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United States - Country in North America
The United States of America, commonly known as the United States or America, is a country mostly located in central North America, between Canada and Mexico.
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United Kingdom - Country in Europe
The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom or Britain, is a sovereign country located off the northwestern coast of the European mainland.