Over the past three decades, there has been a startling increase in the prevalence of obesity across the USA, at least doubling in adult men and women (aged 25 and older) and older female and male adolescents (aged 15-24 years) since 1990, with the number of people living with overweight and obesity reaching over 208 million in 2021-;a trend set to continue in the coming decades without significant reform, according to a major new analysis from the Global Burden of Disease Study Collaborator Network, published in The Lancet.