Halting the obesity epidemic: a public health policy approach

Traditional ways of preventing and treating overweight and obesity have almost invariably focused on changing the behavior of individuals, an approach that has proven woefully inadequate, as indicated by the rising rates of both conditions. Considering the many aspects of American culture that promote obesity, from the proliferation of fast-food outlets to almost universal reliance on automobiles, reversing current trends will require a multifaceted public health policy approach as well as considerable funding. National leadership is needed to ensure the participation of health officials and researchers, educators and legislators, transportation experts and urban planners, and businesses and nonprofit groups in formulating a public health campaign with a better chance of success. The authors outline a broad range of policy recommendations and suggest that an obesity prevention campaign might be funded, in part, with revenues from small taxes on selected products that provide "empty" calories-such as soft drinks-or that reduce physical activity-such as automobiles.     

Public understanding of food risks in four European countries: a qualitative study

BACKGROUND: In the wake of the 'bovine spongiform encephalopathy (BSE) crisis' there was renewed interest in how those responsible for public health could take account of public views, both to 'democratize' policy making and to increase the likelihood of information about health risks resonating with public concerns. This study explored how members of the public in four European countries (Finland, Germany, Italy and the UK) understood food risks in general, and risks arising from BSE in particular. The aims were to identify the sources of knowledge used and trusted by the public and to explore how public views could be accessed for public health information policy. METHODS: Thirty-six focus group interviews were held using a common protocol across the four countries, including people from four life-cycle stages. RESULTS: The study demonstrated the utility of using focus groups as a relatively efficient method for accessing public views, and the feasibility of cross-national qualitative research on public views. We found that public views of food risks are neither irrational nor na?ve, but that they do need to be interpreted in the context of everyday food purchasing decisions, in which particular food risks are unlikely to have the same salience as they do for experts. CONCLUSIONS: Focus groups are a feasible method for accessing public knowledge on public health risks to inform information strategies.     

Prevention of childhood obesity in Spain: a focus on policies outside the health sector. SESPAS report 2010

Obesity is currently a global public health problem. Obesity in early life increases the risk of long-term energy imbalance and adult obesity and its comorbidities, type 2 diabetes, and cardiovascular disease. Since infancy and childhood are critical periods for the adoption of food preferences and physical activity, prevention strategies must intervene in these early periods to promote healthy habits and reduce risk behaviors. Trends in the prevalence of childhood obesity and overweight in Spain have continuously increased in the last three decades. Obesity and overweight currently affect 15 and 20% of Spanish children, respectively, and these percentages are among the highest in Europe. Childhood obesity is determined by social and economic factors pertaining to sectors other than the health system, such as advertising, the built environment, education and the school environment, transportation and the food environment. Following the Health in All Policies (HiAP) approach, the authors identified a series of multisector policy changes that may help to prevent and control the current rising trend of childhood obesity in Spain. The HiAP approach acknowledges that social factors including socioeconomic status, gender differences and the work-life balance are important to develop effective policy changes in the prevention of childhood obesity. A key to success in the prevention of childhood obesity in Spain through policy changes will depend on the ability to establish a policy with the explicit and primary goal of improving health outcomes, despite the anticipated resistance from various sectors and stakeholders.     

Erroneous Consonance. How inaccurate beliefs about physician opinion influence COVID-19 vaccine hesitancy

Throughout the COVID-19 pandemic, researchers have studied how Americans' attitudes toward health experts influence their health behaviors and policy opinions. Fewer, however, consider the potential gap between individual and expert opinion about COVID-19, and how that might shape health attitudes and behavior. This omission is notable, as discrepancies between individual and expert opinion could help explain why some Americans fail to take action to protect themselves and others from the virus. In novel demographically representative surveys of the US adult population (N = 5,482) and primary care physician subpopulations (PCPs; N = 625), we contrast the relationship between: (1) Americans’ and (2) PCPs' preferences regarding who ought to be responsible for taking action to combat the spread of COVID-19, as well as (3) Americans' perceptions of PCP preferences (“PCP meta-opinion”). In the aggregate, we find that Americans are far less likely than PCPs to see a role for both private and state actors in taking action to combat COVID-19. Interestingly, though, this disjuncture is not reflected in individual-level PCP meta-opinion; as most Americans think that PCPs share their views on state and private intervention (τ_b = 0.44–0.49). However, this consonance is often erroneous, which we show can have problematic health consequences. Multivariate models suggest that Americans who both see little place for individual responsibility in taking action to stop viral spread and who think that PCPs share those views are significantly less likely to vaccinate against COVID-19. We conclude by discussing the public health benefits of efforts to bring public opinion in line with expert opinion.     

Why are we fat? Discussions on the socioeconomic dimensions and responses to obesity

This paper draws together contributions to a scientific table discussion on obesity at the European Science Open Forum 2008 which took place in Barcelona, Spain. Socioeconomic dimensions of global obesity, including those factors promoting it, those surrounding the social perceptions of obesity and those related to integral public health solutions, are discussed. It argues that although scientific accounts of obesity point to large-scale changes in dietary and physical environments, media representations of obesity, which context public policy, pre-eminently follow individualistic models of explanation. While the debate at the forum brought together a diversity of views, all the contributors agreed that this was a global issue requiring an equally global response. Furthermore, an integrated ecological model of obesity proposes that to be effective, policy will need to address not only human health but also planetary health, and that therefore, public health and environmental policies coincide.     

Social acceptability of standard and behavioral economic inspired policies designed to reduce and prevent obesity

The obesity epidemic is a significant public policy issue facing the international community, resulting in substantial costs to individuals and society. Various policies have been suggested to reduce and prevent obesity, including those informed by standard economics (a key feature of which is the assumption that individuals are rational) and behavioral economics (which identifies and harness deviations from rationality). It is not known which policy interventions taxpayers find acceptable and would prefer to fund via taxation. We provide evidence from a discrete choice experiment on an Australian sample of 996 individuals to investigate social acceptability of eight policies: mass media campaign; traffic light nutritional labeling; taxing sugar sweetened beverages; prepaid cards to purchase healthy food; financial incentives to exercise; improved built environment for physical activity; bans on advertising unhealthy food and drink to children; and improved nutritional quality of food sold in public institutions. Latent class analysis revealed three classes differing in preferences and key respondent characteristics including capacity to benefit. Social acceptability of the eight policies at realistic levels of tax increases was explored using post-estimation analysis. Overall, 78% of the sample were predicted to choose a new policy, varying from 99% in those most likely to benefit from obesity interventions to 19% of those least likely to benefit. A policy informed by standard economics, traffic light labeling was the most popular policy, followed by policies involving regulation: bans on junk food advertising to children and improvement of food quality in public institutions. The least popular policies were behaviorally informed: prepaid cards for the purchase of only healthy foods, and financial incentives to exercise.     

Physical Activity and Food Environments: Solutions to the Obesity Epidemic

Context: Environmental, policy, and societal changes are important contributors to the rapid rise in obesity over the past few decades, and there has been substantial progress toward identifying environmental and policy factors related to eating and physical activity that can point toward solutions. This article is a status report on research on physical activity and food environments, and it suggests how these findings can be used to improve diet and physical activity and to control or reduce obesity.
Methods: This article summarizes and synthesizes recent reviews and provides examples of representative studies. It also describes ongoing innovative interventions and policy change efforts that were identified through conference presentations, media coverage, and websites.
Findings: Numerous cross-sectional studies have consistently demonstrated that some attributes of built and food environments are associated with physical activity, healthful eating, and obesity. Residents of walkable neighborhoods who have good access to recreation facilities are more likely to be physically active and less likely to be overweight or obese. Residents of communities with ready access to healthy foods also tend to have more healthful diets. Disparities in environments and policies that disadvantage low-income communities and racial minorities have been documented as well. Evidence from multilevel studies, prospective research, and quasi-experimental evaluations of environmental changes are just beginning to emerge.
Conclusions: Environment, policy, and multilevel strategies for improving diet, physical activity, and obesity control are recommended based on a rapidly growing body of research and the collective wisdom of leading expert organizations. A public health imperative to identify and implement solutions to the obesity epidemic warrants the use of the most promising strategies while continuing to build the evidence base.     

Development of the World Health Organization Global Physical Activity Questionnaire (GPAQ)

The aim of developing the World Health Organization (WHO) Global Physical Activity Questionnaire (GPAQ) was to have a tool that would produce valid and reliable estimates of physical activity, especially relevant to developing countries where patterns of energy expenditure differ from developed countries because people experience diverse ways of life. The development of a standardized tool to measure physical activity that enables comparisons across culturally diverse populations is a challenging task. Comparable, valid, and reliable information on physical activity enables countries to follow trends over time, understand regional and global comparisons, and better inform physical activity policy decisions. A WHO expert working group on physical activity measurement provided a draft GPAQ for global consultation. The draft instrument was validated in nine countries. Validation studies and qualitative feedback on GPAQ were presented at an Expert Meeting on Global Physical Activity Surveillance held jointly by WHO and the US Centers for Disease Control and Prevention. A second round of global consultation led to minor revisions and preparation of a final GPAQ version 2 instrument (GPAQv2). Around 50 developing countries are now using GPAQ for physical activity data collection. GPAQv2 is a suitable physical activity surveillance instrument for developing countries.This article contains the views of its authors and does not necessarily represent the decisions or stated policy of WHO.     

Reversing the obesity epidemic: policy strategies for health funders

As part of its continuing mission to serve trustees and staff of health foundations and corporate giving programs, Grantmakers In Health (GIH) convened a group of health funders and policy experts on November 3, 2006 to discuss policy strategies to reverse the obesity epidemic. This report, drawing upon a background paper prepared for the Issue Dialogue and discussion at that meeting, provides an overview of the costs and consequences of the obesity epidemic; presents the rationale for using policy approaches to change food and physical activity environments; and highlights the efforts of health funders supporting policy change in schools, food systems and sustainable agriculture, the built environment, and across communities. It also briefly examines trends and opportunities in health systems, workplaces, and state programs, and concludes with a discussion of challenges and opportunities for moving forward.     

Size counts: evolutionary perspectives on physical activity and body size from early hominids to modern humans

This paper examines the evolutionary origins of human dietary and activity patterns, and their implications for understanding modern health problems. Humans have evolved distinctive nutritional characteristics associated the high metabolic costs of our large brains. The evolution of larger hominid brain size necessitated the adoption of foraging strategies that both provided high quality foods, and required larger ranges and activity budgets. Over time, human subsistence strategies have become ever more efficient in obtaining energy with minimal time and effort. Today, populations of the industrialized world live in environments characterized by low levels of energy expenditure and abundant food supplies contributing to growing rates of obesity. Analyses of trends in dietary intake and body weight in the US over the last 50 years indicate that the dramatic rise in obesity cannot be explained solely by increased energy consumption. Rather, declines in activity are also important. Further, we find that recent recommendations on physical activity have the potential to bring daily energy expenditure levels of industrialized societies surprisingly close to those observed among subsistence-level populations. These findings highlight the importance of physical activity in promoting nutritional health and show the utility of evolutionary approaches for developing public health recommendations.     

Perceptions of the environment, physical activity, and obesity

Obesity rates are rising rapidly across the developed and developing world. Until recently obesity research has mainly focused on biological, psychological and behavioural factors. But there is growing agreement that environmental factors play an important role as well. In this study data from the 2003 Health Survey for England (n = 14,836) were analysed from a multilevel perspective to examine (1) the associations of the perceptions of the local environment with obesity, self-rated health, and physical activity, and (2) whether physical activity mediates the association between the perceptions of the environment, and obesity and self-rated health. This study found that perceptions of the friendliness of the local environment were mainly associated with self-rated health; perceived access to leisure facilities with sports activities; perceived access to a post office with walking; and the presence of social nuisances with obesity and poor self-rated health. In addition, positive perceptions of the social environment (i.e., social support and social capital) were associated with higher levels of physical activity, and lower levels of poor self-rated health and obesity. Only limited support was found for the idea that health behaviours mediate the associations between the perceptions of the environment, obesity, and self-rated health. Controlling for the three physical activity measures only rendered a small number of associations with self-rated health non-significant, and did not affect the associations with obesity. Overall, the results show that certain aspects of the environment may contribute to the risk of obesity and poor health. More research is needed to examine the specific mechanisms that link (the perceptions of) the environment to obesity and health.     

Use of expert assessments in the determination of priority trends in social hygiene and public health organization

The study data on the evaluation of future trends in research on social hygiene and public health organization are provided. It was an expert method that was used to study the opinion of leading scientists in social hygiene and of a large number of experts-managers of public health bodies and institutions. The computerised data permitted to determine the present and future priority problems in the field of social hygiene which could be used by research workers as a social goal for practical application.     

Rebranding exercise: closing the gap between values and behavior

Background

Comprehensive, multi-level approaches are required to address obesity. One important target for intervention is the economic domain. The purpose of this study was to synthesize existing evidence regarding the impact of economic policies targeting obesity and its causal behaviours (diet, physical activity), and to make specific recommendations for the Canadian context.

Methods

Arksey and O'Malley's (2005) methodological framework for conducting scoping reviews was adopted for this study and this consisted of two phases: 1) a structured literature search and review, and 2) consultation with experts in the research field through a Delphi survey and an in-person expert panel meeting in April 2010.

Results

Two key findings from the scoping review included 1) consistent evidence that weight outcomes are responsive to food and beverage prices. The debate on the use of food taxes and subsidies to address obesity should now shift to how best to address practical issues in designing such policies; and 2) very few studies have examined the impact of economic instruments to promote physical activity and clear policy recommendations cannot be made at this time. Delphi survey findings emphasised the relatively modest impact any specific economic instrument would have on obesity independently. Based on empirical evidence and expert opinion, three recommendations were supported. First, to create and implement an effective health filter to review new and current agricultural polices to reduce the possibility that such policies have a deleterious impact on population rates of obesity. Second, to implement a caloric sweetened beverage tax. Third, to examine how to implement fruit and vegetable subsidies targeted at children and low income households.

Conclusions

In terms of economic interventions, shifting from empirical evidence to policy recommendation remains challenging. Overall, the evidence is not sufficiently strong to provide clear policy direction. Additionally, the nature of the experiments needed to provide definitive evidence supporting certain policy directions is likely to be complex and potentially unfeasible. However, these are not reasons to take no action. It is likely that policies need to be implemented in the face of an incomplete evidence base.     

Including the public perspective in health-related MCDA: ideas from the field of public opinion research and polling

This commentary utilizes the lens of public opinion research in health to suggest ideas for best integrating public input into multi-criteria decisions analysis (MCDA) approaches. The field of public opinion research suggests: (1) there is frequently a distinction between public and expert views, even outside of situations where the public has direct experience; (2) representative samples are important to ensure findings reflect all segments of the relevant population; and (3) limiting cognitive burden in studies designed to elicit public preferences is essential for meaningful responses that represent the population’s views. Together these reflections suggest the need for considering new avenues for including public views in MCDA approaches where representative samples relying on well-designed questions are utilized more regularly.     

Do obesity-promoting food environments cluster around socially disadvantaged schools in Glasgow,Scotland?

Increase in the consumption of food and drinks outside the home by adolescents and young people and associations with rising levels of obesity is a significant concern worldwide and it has been suggested that the food environment around schools may be a contributory factor. As few studies have explored this issue in a UK setting, we examined whether different types of food outlets are clustered around public secondary schools in Glasgow, and whether this pattern differed by social disadvantage. We found evidence of clustering of food outlets around schools but a more complex picture in relation to deprivation was observed. Across all schools there were numerous opportunities for pupils to purchase energy dense foods locally and the implications for policy are discussed.     

Peer Reviewed: Qualitative Research About Attributions,Narratives, and Support for Obesity Policy, 2008

Introduction

Successful efforts to reduce obesity will require public policy strategies that target both individuals and external factors such as social conditions, economic circumstances, and physical environments. Public opinion data suggest that many policy changes to reduce obesity are likely to face public resistance.

Methods

We conducted 4 focus groups involving 33 adults living in or near a midsized Midwestern city in July 2008. Participants were assigned to the focus groups on the basis of self-reported political ideology. We used a semistructured discussion guide to 1) better understand public perceptions of obesity and 2) assess the promise of narratives as a strategy to stimulate meaningful discussion about obesity-related policy change.

Results

Participants viewed internal factors as primary causes of obesity. Despite substantial acknowledgment of external causes of obesity, many participants — particularly political conservatives — were resistant to external policy solutions for the problem. Across the political spectrum, participants responded more favorably to a short narrative emphasizing barriers to reducing adult obesity than a story emphasizing barriers to reducing childhood obesity.

Conclusion

This study provides a deeper context for understanding public perceptions about obesity. Some types of narratives appear promising for promoting support for policy solutions to reduce obesity.     

Public Health Law and the Prevention and Control of Obesity

Context: Obesity constitutes a major public health challenge in the United States. Obesogenic environments have increased owing to the consumption of calorie-dense foods of low nutritional value and the reduction of daily physical activity (e.g., increased portion sizes of meals eaten in and out of the home and fewer physical activity requirements in schools). Policymakers and public health practitioners need to know the best practices and have the competencies to use laws and legal authorities to reverse the obesity epidemic. For instance, statutes and regulations at the federal, state, and local levels of government have been implemented to improve nutritional choices and access to healthy foods, encourage physical activity, and educate consumers about adopting healthy lifestyles.Methods: In an effort to understand the application of laws and legal authorities for obesity prevention and control, in June 2008 the Centers for Disease Control and Prevention convened the National Summit on Legal Preparedness for Obesity Prevention and Control. An outcome of this summit will be the publication of the proceeding''s white papers written by eight law and subject-matter experts with substantive contributions from summit participants, which will identify actionable options that sectors and organizations at various jurisdictional levels can consider adopting.Findings: Law has played a critical role in the control of chronic diseases and the behaviors that lead to them. The use of a systematic legal framework—the use of legislation, regulation, and policy to address the multiple factors that contribute to obesogenic environments—can assist in the development, implementation, and evaluation of a variety of legal approaches for obesity prevention and control.Conclusions: Although public health–focused legal interventions are in an early stage and the direct and indirect impact they may have on the obesity epidemic is not yet understood, efforts such as the summit and white papers should help determine potentially viable legal interventions and assess their impact on population-level change.     

The Roles and Duties of the Expert Witness

This paper was presented as a keynote address at the 'Expert Witness in Children Order Proceedings Conference' at the Hilton Hotel, Belfast, 1 October 2002. As the roles and responsibility of the expert have, by and large, been determined by the court, this paper seeks to demonstrate how Case Law has been influential in this area. In summary, it is the role of the expert witness to advise the judge, to undertake assessment, to give an opinion and to consult with other experts with a letter of instruction providing the framework. The duty of the expert witness is to show objectivity and proper research. Consideration was also given to judges' views of experts. This ranges from critical to constructive comments. Specific issues, such as the possibility of the expert witness misleading, whether or not an expert can express a firm opinion about whether an event has happened, and whether a child is speaking the truth, demonstrate difficulties for experts as they seek to understand the subtleties of the law of evidence.     

The Attitudes of British Methodist Ministers Towards Alcoholism

"The Alcoholism Questionnaire" was sent to 100 Methodist ministersby post. On the basis of the 67 replies received, it is concludedthat the respondents hold healthy and positive attitudes towardsalcoholism at a cognitive level, although it is not known howthey feel or behave in relation to alcoholism. Their views aregenerally in agreement with the experts on alcoholism, but theydiffer on two factors from the views of the general public.Ministers who were abstainers did not have attitudes which wereless healthy than those who were social drinkers. It is suggestedthat ministers who hold such positive attitudes may be instrumentalin altering public opinion about alcoholism.