Obesity prevalence in England adults rose from 26.3% in 2019 to 30.3% by 2025, affecting nearly one-third of the population.
Incidence increased most steeply among young adults aged 20-39 years, with socioeconomically deprived groups facing 35% higher obesity rates.
Marked ethnic and sex disparities were observed, with Asian women in deprived areas experiencing nearly double the incidence compared to least deprived White women.
Geographical variation showed nearly sixfold differences in obesity prevalence across regions, exacerbating health inequality concerns post-COVID-19 pandemic.