Summary
A new Lancet study reveals nearly three-quarters of U.S. adults are overweight or obese, a sharp rise from just over half in 1990.
Obesity among adults doubled to over 40%, while rates among girls and women aged 15–24 nearly tripled to 29%.
The study highlights significant health risks, including diabetes, heart disease, and shortened life expectancy, alongside projected medical costs of up to $9.1 trillion over the next decade.
Experts stress obesity’s complex causes—genetic, environmental, and social—and call for structural reforms like food subsidies, taxes on sugary drinks, and expanded treatment access.
Why is that the news? Using NHANES data for standardized numbers, in 1990 it was roughly 44% of Americans. That’s lower than 1980 (~47%), 1970 (~48%), and 1960 (~46%). Did you think Americans were unusually thin in 1990 or something?
The 1990s are actually when the numbers jump. By 2000, it’s 65%. 2010, it’s 68%. And in 2020 to the most recent yearly data (2023), its 74%.