Adler Nancy E, Stewart Judith
University of California-San Francisco, 3333 California Street, San Francisco, CA 94143-0848, USA.
Milbank Q. 2009 Mar;87(1):49-70. doi: 10.1111/j.1468-0009.2009.00547.x.
The rise in obesity in the United States may slow or even reverse the long-term trend of increasing life expectancy. Like many risk factors for disease, obesity results from behavior and shows a social gradient. Especially among women, obesity is more common among lower-income individuals, those with less education, and some ethnic/racial minorities.
This article examines the underlying assumptions and implications for policy and the interventions of the two predominant models used to explain the causes of obesity and also suggests a synthesis that avoids "blaming the victim" while acknowledging the role of individuals' health behaviors in weight maintenance.
(1) The medical model focuses primarily on treatment, addressing individuals' personal behaviors as the cause of their obesity. An underlying assumption is that as independent agents, individuals make informed choices. Interventions are providing information and motivating individuals to modify their behaviors. (2) The public health model concentrates more on prevention and sees the roots of obesity in an obesogenic environment awash in influences that lead individuals to engage in health-damaging behaviors. Interventions are modifying environmental forces through social policies. (3) There is a tension between empowering individuals to manage their weight through diet and exercise and blaming them for failure to do so. Patterns of obesity by race/ethnicity and socioeconomic status highlight this tension. (4) Environments differ in their health-promoting resources; for example, poorer communities have fewer supermarkets, more fast-food outlets, and fewer accessible and safe recreational opportunities.
A social justice perspective facilitates a synthesis of both models. This article proposes the concept of "behavioral justice" to convey the principle that individuals are responsible for engaging in health-promoting behaviors but should be held accountable only when they have adequate resources to do so. This perspective maintains both individuals' control and accountability for behaviors and society's responsibility to provide health-promoting environments.
美国肥胖率的上升可能会减缓甚至扭转预期寿命增长的长期趋势。与许多疾病风险因素一样,肥胖源于行为,并呈现出社会梯度差异。尤其是在女性中,肥胖在低收入人群、受教育程度较低者以及一些少数族裔中更为普遍。
本文审视了用于解释肥胖成因的两种主要模式的潜在假设、对政策及干预措施的影响,并提出一种综合观点,既避免“指责受害者”,同时承认个人健康行为在维持体重方面的作用。
(1)医学模式主要侧重于治疗,将个人的行为视为肥胖的成因。一个潜在假设是,作为独立个体,人们会做出明智的选择。干预措施是提供信息并激励个人改变行为。(2)公共卫生模式更侧重于预防,认为肥胖的根源在于致胖环境,这种环境中充斥着导致人们做出损害健康行为的各种影响因素。干预措施是通过社会政策改变环境因素。(3)在赋予个人通过饮食和锻炼控制体重的权力与因个人未能做到而指责他们之间存在矛盾。按种族/族裔和社会经济地位划分的肥胖模式凸显了这种矛盾。(4)不同环境的健康促进资源存在差异;例如,较贫困社区的超市较少,快餐店较多,且可及的安全娱乐机会较少。
社会正义视角有助于融合这两种模式。本文提出“行为正义”的概念,以传达这样一个原则,即个人有责任采取促进健康的行为,但只有在他们有足够资源这样做时才应承担责任。这种视角既保持了个人对行为的控制权和责任感,也体现了社会提供促进健康环境的责任。