Today is World Obesity Day, a moment for health advocates, clinicians and policymakers to take stock of a crisis affecting one in six adults worldwide, and to ask a pressing question: ‘are governments responding to rising obesity rates with policies and interventions that are truly strong enough?’
In the United Kingdom, the government’s response appears to be robust. The National Health Service (NHS) covers all four evidence-based pillars of obesity care: nutrition counselling, intensive behavioural therapy, approved medications, and bariatric surgery, the only country to provide coverage across all four out of the 20 countries assessed in Economist Impact’s Global Obesity Response Index, supported by Eli Lilly.
National policy also appears to be strong. The government restricts junk food marketing to children, taxes sugary drinks, mandates calorie labelling and enforces school nutrition standards. Ministers have pledged a ‘moonshot to end the obesity epidemic’, signalling clear political intent.
Despite achieving a perfect score for obesity management, only 3% of adults living with overweight or obesity in England have ever been referred to weight management services. Ranking seventh out of 20 countries in the Index, the UK still demonstrates significant gaps in policy implementation and governance that undermine comprehensive policy commitment to obesity management.
This is the central paradox in the UK’s obesity policy: strong policy intent is not translating into real-world access. Gaps in governance, such as the absence of legal protections against weight-based discrimination and limited promotion of physical activity in schools, are among the key shortcomings undermining the UK’s overall response to obesity. Without adequate policy intervention, the proportion of the population living with obesity could reach one in four by 2035.
Strong system, weak governance
The UK’s perfect obesity management score and its strong score on food quality and access (90 out of 100) reflect genuine, hard-won policy achievements. But the Index does not only measure what a health system contains. It also measures whether that system is governed with the rigour required to deliver results.
On policy and governance, the UK scores a lacklustre 42.5 out of 100. While the government’s 10 Year Health Plan pledges bold action on obesity, it does not commit a dedicated budget to support implementation and sets no prevalence-reduction targets to enable accountability.
The UK would benefit from looking at peers who are leading the way in effective obesity governance. Serbia, which tops the Index with a score of 74.8 and a near-perfect governance score of 95, dedicates funding towards its obesity strategy, sets clear actions and evaluation metrics for prevention and management and calls for regular monitoring and evaluation to assess the impact of interventions.
Brazil, ranked third at 72.4, developed its national obesity prevention strategy with the direct participation of people living with obesity; the only country in the Index to have done so. France, ranked second at 74.3, has committed to a new five-year management roadmap.
These countries are publishing strategies while building the accountability structures that give strategies meaning.The UK has the clinical tools, but lacks the governance to deploy them.
The legal gap that stigma fills
Underlying the shortcomings in governance is a more fundamental one: the UK does not formally recognise obesity as a complex, progressive and relapsing chronic disease, and weight is not a protected characteristic under the Equality Act 2010.
This is not an abstract definitional question. When obesity is treated in law and policy as a lifestyle choice rather than a disease shaped by genetic, social, psychological and environmental factors, the consequences are significant.
Clinicians are less likely to be trained to treat it as a complex, multifactorial disease rather than a personal choice. Stigma and discrimination follow, with patients less likely to seek help or not receiving adequate care and treatment.
According to the Index, only six countries (Finland, France, Germany, Mexico and Spain) provide legal protections against weight-based discrimination. France formally defines obesity as a chronic disease in its draft National Health Strategy, and a 2019 ruling extended anti-discrimination law to cover obesity and ‘fatphobia’ explicitly. Finland bans discrimination based on ‘state of health’ under its Non-discrimination Act. Serbia’s discrimination law covers health status and physical appearance. Mexico (ranked 11th in the Index) has indirect legal protection against weight-based bias.
The UK offers none of this protection. Weight stigma remains structurally tolerated under law in England and Wales. Stigma, both experienced and internalised, is itself a barrier to treatment, a driver of mental health comorbidities, and an independent risk factor for worse clinical outcomes. A system that provides excellent care on paper while allowing the conditions that prevent people from accessing it is not a system that has solved the problem.
The physical activity gap
The UK’s physical activity score of 25 out of 100 is the starkest number in its Index profile. Schools are not required to provide daily physical activity. Government guidance recommends two hours of physical education per week; roughly 24 minutes per school day, less than half the WHO’s 60-minute daily recommendation for children.
Again, the UK can learn from others who are exceeding standards on physical education. China mandates two hours of daily physical activity for children, exceeding the WHO target. France requires 30 minutes daily and still outperforms the UK. Among the 20 countries in the Index, only a handful score lower than the UK on the physical activity pillar.
A government that declares a moonshot against obesity while failing to mandate a cost-effective, evidence-based, population-level intervention—getting children moving every day—is falling short in effectively managing rising obesity rates.
Closing the gap between intent and action
Obesity affects more than a quarter of adults in England. It is the second-largest preventable cause of cancer. Its economic cost runs to tens of billions of pounds annually in lost productivity and NHS expenditure. The human cost, in years lost to preventable comorbidities, in the suffering of people who have been told their condition is a personal failing, is beyond calculation.
A country with a perfect management score and a 3% referral rate is not failing because it lacks the tools. It is failing because it has not effectively translated policy intent into effective implementation and action. Three key areas of focus for the UK government are:
- Dedicated budget for obesity prevention and treatment: First, the government must commit a dedicated, ring-fenced budget for obesity prevention and treatment, alongside clear, measurable prevalence-reduction targets that incentivise policymakers and hold them to account.
- Legal protection against weight-based discrimination: Second, obesity must be formally recognised as a chronic disease, with weight-based discrimination made unlawful, so that the NHS, employers and clinicians are structurally incentivised to treat obesity as a priority disease, not an optional risk factor.
- Daily physical activity as a requirement in schools: Third, daily physical activity should become a statutory requirement in schools, aligned with WHO guidance, embedding prevention and management early and at minimal cost.
World Obesity Day is a test of whether commitments translate into action. Britain has built many of the right clinical and policy foundations, yet 97% of those who need care still do not receive it.
Closing that gap will require political will: to fund the system properly, protect people from stigma, and hold the government accountable not for promises made, but for outcomes delivered.
About the Global Obesity Response Index
The Global Obesity Response Index is an independent piece of research and analysis from Economist Impact, supported by Eli Lilly. Building on the US Obesity Response Index which evaluates obesity responses across all US states, the Global Index assesses obesity prevention and management policy in 20 countries. The Index identifies where policy intervention is needed globally and in each country.
The accompanying report, An epidemic of inaction: assessing national responses to obesity showcases findings from the Index, highlighting countries that lead in their obesity policy response and identifying where urgent action is needed to close policy gaps.
To hear directly from people living with obesity and learn about their experiences, watch the video series here.
