A recent study indicates that new obesity cases are increasing most quickly among younger adults in England. Published in The Lancet, the research shows obesity diagnoses for people in their 20s and 30s have risen sharply since before the Covid-19 pandemic. Researchers noted differences by ethnic background and deprivation levels, with non-white groups and lower-income areas seeing steeper increases. Health experts expressed concern that earlier diagnoses may result in more individuals developing serious conditions at younger ages. Analysts from the University of Cambridge, the British Heart Foundation and the George Institute for Global Health reviewed 55 million NHS records to track new obesity diagnoses across England. For adults aged 30 to 39, new cases reached 24.1 per 1,000 people in 2024-25, up from 20.3 per 1,000 in 2019-20. Among those aged 20 to 29, the rate rose from 17.5 to 20.3 per 1,000 over the same period, the largest increases recorded for any age group. While obesity continued to be diagnosed most often in people in their 40s and 50s, the faster rise among younger adults raised particular alarm. Lead researcher Robert Fletcher noted that the study did not identify exact causes but suggested several contributing factors. Younger adults grew up amid widespread availability of unhealthy food, with many fast food outlets and heavy advertising during their formative years. The pandemic and cost-of-living pressures may also have affected this group more, as managing children, remote work and rising prices made healthy options harder to maintain. Public health leaders pointed to broader issues in the UK food environment. Sarah Perman of the Association of Directors of Public Health observed that unhealthier products now dominate supermarkets, local shops and fast food outlets, with advertising heavily targeting children and young people. Healthier foods cost roughly twice as much per calorie as less healthy alternatives, adding barriers for families. Katharine Jenner of the Obesity Health Alliance noted that digital habits, including food delivery apps and social media use, combined with disrupted exercise routines during the pandemic, have influenced eating patterns. Overall adult obesity prevalence increased from 26.2% to 30.3% during the five-year period. However, new diagnoses declined among adults aged 60 to 79, possibly linked to greater use of weight-loss medications obtained privately. Professor Sir Michael Marmot of University College London described the results as concerning evidence that health inequalities have widened since the pandemic. A Department of Health and Social Care spokesperson stated that the government is addressing obesity through limits on junk food advertising and targets to promote healthier food sales.
