Study: Half of Adults Will Be Overweight or Obese by 2050

Study: Half of Adults Will Be Overweight or Obese by 2050
Above: Phentermine and topiramate weight loss drugs on Oct. 17, 2024. Image credit: Michael Siluk/UCG/Universal Images Group via Getty Images

The Facts

  • According to a study published in The Lancet journal, the number of adults with overweight or obesity is expected to rise to 3.8B by 2050, representing about 60% of the global adult population.
  • The study found that the number of adults who are overweight or obese increased from 731M in 1990 to 2.11B in 2021, noting that eight countries — China, India, the US, Brazil, Russia, Mexico, Indonesia, and Egypt — account for more than half of this population.
  • The US had the highest obesity rates among high-income countries, with approximately 42% of males and 46% of females affected by obesity in 2021. Projections suggest these numbers will continue to rise.

Sources Split


The Spin


Narrative A

The obesity epidemic represents a profound societal failure that demands immediate intervention through comprehensive policy reforms, including marketing restrictions on unhealthy foods and improved access to nutritious options, particularly in low-income nations where healthcare systems are already strained.

Narrative B

It's important to acknowledge that obesity is a complex medical condition influenced by genetic, metabolic, and environmental factors that can't be addressed solely through public health interventions. The focus should be on individual responsibility and clinical management through new treatments like weight-loss medications.


Metaculus Prediction

© 2026 Improve the News Foundation. All rights reserved.Version 7.18.2

© 2026 Improve the News Foundation.

All rights reserved.

Version 7.18.2