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During World War I, dieting instructions by popular health and beauty experts such as Lulu Hunt Peters, Susanna Cocroft, and Antoinette Donnelly were part of a food dispositif that produced gendered ideas of corporeal citizenship. Dieting was framed as an expression of patriotism and a civic duty. Instructing female readers in self-discipline and self-surveillance, diet discourses promised women initially political and economic equality if they subjected themselves to the new disciplinary regimen. After the war, dieting instructions reframed dieting as a liberating practice for women and associated weight loss with success, white superiority, glamor, and self-determination. Hollywood and fashion design helped dieting to become a wildly popular practice with which women asserted the control over their own bodies and lives. This produced a backlash staged by media and doctors, claimed female dieters to be irrational, in danger and in need of supervision. This article explores the role of advice literature in the subjection of female bodies.

Feminist scholars have long demonstrated how women are constrained through dieting discourse. Today's scholars wrestle with similar themes, but confront a thornier question: how do we make sense of a food discourse that frames food choices through a lens of empowerment and health, rather than vanity and restriction? This article addresses this question, drawing from interviews and focus groups with women (N=100), as well as health-focused food writing. These data allow us to document a postfeminist food discourse that we term the do-diet. The do-diet reframes dietary restrictions as positive choices, while maintaining an emphasis on body discipline, expert knowledge, and self-control. Our analysis demonstrates how the do-diet remediates a tension at the heart of neoliberal consumer culture: namely, the tension between embodying discipline through dietary control and expressing freedom through consumer choice. With respect to theory, our analysis demonstrates how the embodied dimensions of neoliberalism find gendered expression through postfeminism. We conclude that the do-diet heightens the challenge of developing feminist critiques of gendered body ideals and corporeal surveillance, as it promises a way of eating that is both morally responsible and personally empowering.

BackgroundDisordered eating behaviors (DEB) impact on health and wellbeing worldwide. This study aimed to examine sociodemographic trends in the prevalence of DEB over 20 years in the Australian general population.MethodsData were derived from five sequential cross-sectional surveys (1998, 2008, 2009, 2016 and 2017) with population-representative samples of adults and adolescents residing in South Australia (N = 15 075). DEBs investigated were objective binge eating (OBE), strict dieting/fasting, and purging. Sociodemographic data included gender, age, educational level, work and marital status, and residence.ResultsOBE prevalence increased significantly. Strict dieting/fasting also increased from 1998 to 2008/9 but remained stable between 2008/9 and 2016/7. Purging prevalence did not change significantly over time. All survey years were associated with a significantly higher odds of OBE, and strict diet/fasting compared to 1998. Lower age, a higher Accessibility Remoteness Index of Australia (ARIA) score, higher body mass index (BMI), higher educational attainment, and not being in a married or de facto relationship were independently associated with greater adjusted odds for endorsing OBE. Younger age, female gender, and higher BMI were also independently associated with greater adjusted odds for endorsing strict dieting/fasting.ConclusionsThe increased prevalence of DEBs in various strata of Australian society has both public health and clinical implications. The results refute the stereotype that eating disorders (EDs) predominantly affect young women. They build impetus for future research on EDs among men and older individuals, with a view to developing tailored public health and clinical interventions for these populations.

The United Kingdom, in common with many countries, has an ageing demographic. Changes accompanying ageing can influence food choice and dietary habits. This study explored older adults’ perceptions and practices related to dietary behaviour and the factors influencing their food choice in later life. Semi-structured focus-group discussions were conducted with 30 individuals (aged 63–90 years) in a UK city. An inductive thematic approach was adopted for data analysis, and 4 themes and 12 sub-themes emerged: age-related changes (lower appetite, food changes, declining physical function); food access (food cost, support with food, maintaining independence); on your own (cooking for one, eating alone, shopping for one); and relationship with food (food variety, eating what you want, dieting). These influenced participants’ food acquisition, food preparation and cooking, as well as eating habits. Living alone and its substantial influence, as well as associated social isolation and loneliness, were highlighted in many of the discussions. Given the possible implications for nutritional intake, further work is recommended in this area. Likewise, steps should be taken to improve food access, increase opportunities for commensal eating and, fundamentally, address social isolation and loneliness in the older population.

•We applied a prominent large language model (ChatGPT) in nutritional sciences.•ChatGPT was tested via 56 diets for 14 food allergens and at four restrictions levels.•We tested the safety, accuracy, and attractiveness of these “robo-diets.”•ChatGPT produced balanced diets, but it was unsafe for one allergen.•We discussed how the quality of robo-diets can improve in the future. The introduction of ChatGPT has sparked enormous public interest in large language (deep-learning) models, which have been sophisticated enough to perform well on a variety of tasks. One way people are using these models is to construct diets. The prompts often include food restrictions that are an obligatory part of everyday life for millions of people worldwide. The aim of this study was to investigate the safety and accuracy of 56 diets, constructed for hypothetical individuals who are allergic to food allergens. Four levels, corresponding to the “baseline” ability of ChatGPT without prompting for specifics, as well as its ability to prepare appropriate diets when an individual has an adverse food reaction to two allergens or solicits a low-calorie diet, were defined. Findings from our study demonstrated that ChatGPT, although generally accurate, has the potential to produce harmful diets. More common errors involve inaccuracies in portions or calories of food, meals, or diets. We discuss here how the accuracy of large language models could be increased and the trade-offs involved. We propose that prompting for elimination diets can serve as one way to assess differences between such models.

Whenever we see voters explain away their preferred candidate's weaknesses, dieters assert that a couple scoops of ice cream won't really hurt their weight loss goals, or parents maintain that their children are unusually gifted, we are reminded that people's preferences can affect their beliefs. This idea is captured in the common saying, “People believe what they want to believe.” But people don't simply believe what they want to believe. Psychological research makes it clear that “motivated beliefs” are guided by motivated reasoning—reasoning in the service of some self-interest, to be sure, but reasoning nonetheless. People generally reason their way to conclusions they favor, with their preferences influencing the way evidence is gathered, arguments are processed, and memories of past experience are recalled. Each of these processes can be affected in subtle ways by people's motivations, leading to biased beliefs that feel objective. In this symposium introduction, we set the stage for discussion of motivated beliefs in the papers that follow by providing more detail about the underlying psychological processes that guide motivated reasoning.

Food products claim to be healthy in many ways, but prior research has investigated these claims at either the macro level (using broad descriptions such as “healthy” or “tasty”) or the micro level (using single claims such as “low fat”). The authors use a meso-level framework to examine whether these claims invoke natural or scientific arguments and whether they communicate about positive attributes present in the food or negative attributes absent from the food. They find that common front-of-packaging claims can be appropriately classified into (1) science- and absence-focused claims about “removing negatives,” (2) science- and presence-focused claims about “adding positives,” (3) nature- and absence-focused claims about “not adding negatives,” and (4) nature- and presence-focused claims about “not removing positives.” The authors conduct validation studies using breakfast cereals, a category for which nutrition quality varies but food claims are constant. They find that claim type is completely uncorrelated to actual nutrition quality yet influences inferences consumers make about taste, healthiness, and dieting. Claim type also helps predict the effects of hedonic eating, healthy eating, or weight loss goals on food choice.

There is growing recognition of Low Energy Availability (LEA) symptoms in physique sports, however there are no clear recovery guidelines. This study explores how athletes perceive and manage recovery from prolonged and intentional LEA. Findings will inform future recovery strategies aimed at restoring energy availability. Semi-structured interviews were conducted with 19 natural physique athletes (11 males, 8 females) from Australia, New Zealand, North America, and Europe, and data were analyzed thematically. Five themes were identified relating to weight management experiences pre- and post-competition: (1) pride, suffering, and rationalizing LEA, (2) navigating energy restoration, (3) body image disruption, (4) evolving autonomy, and (5) opportunities for supporting recovery. Perceived recovery was influenced by the severity of energy restriction, coaching support, and athlete readiness. Athletes voiced that psychological flexibility and physiological literacy were interconnected with successful outcomes. Athletes experience benefit from early recovery planning, applying flexible approaches to nutrition and training post-competition, and a shift from aesthetic to functional goals. Identified themes support treating recovery as a deliberate and individualized phase within the competitive cycle, with further investigation needed on optimizing post-LEA refeeding and coaching practices.

Background: Childhood overweight and obesity are recognized as predictors of the risk of obesity in adulthood. The aim of this systematic literature review was to determine the association between dietary pattern and obesity risk among children. Methods: Articles were selected from databases (Cochrane Library, Lilacs, Eric, Livivo, and PubMed/Medline), without limitations regarding language or date. Database-specific search terms included the key words “obesity,” “diet,” “dietary pattern,” “childhood,” “children,” “adolescents,” and relevant synonyms. The review included studies that reported the assessment of the dietary pattern in childhood and that correlated eating patterns with the obesity risk through cluster analysis (CA) and/or factor analysis and/or principal component analysis and presented odds ratios (ORs). The methodology of the selected studies was evaluated using the JBI Critical Appraisal Checklist for Analytical Cross-Sectional Studies. Owing to the heterogeneity among the assessments of the association of dietary patterns and obesity, the results are described narratively. Results: Using a selection process in two phases, 16 articles were included. Fifteen studies used a cross-sectional design, and one case–control study. The included studies showed variation in sample size (range = 232 to 10,187 children/adolescents) and age (range = 1–19 years old). The studies reported between two and five dietary patterns each. The OR for the relationship between the dietary pattern and the risk of childhood obesity ranged from OR = 1.02; confidence interval (95% CI) (0.91–1.15) to OR = 3.55; 95% CI (1.80–7.03). In this study, the dietary patterns identified by the studies were given different names. The food intake patterns identified could, in most factor or CA studies, be categorized as (1) potentially obesogenic foods that increased risk of becoming overweight (including fatty cheeses, sugary drinks, processed foods, fast food, candies, snacks, cakes, animal products, whole milk, and refined grains) or (2) food classified as healthy with the weakest association with the risk of becoming overweight or obese (including low levels of sugar and fat and high levels of fruits, vegetables, whole grains, fish, nuts, legumes, and yogurt). Conclusion: Overall, the results indicated from most studies that a diet with a lower percentage of obesogenic foods should be effective in reducing the risk of developing obesity.

Both regulatory agencies and nonprofit organizations seek to understand how different tactics and appeals contained in food and public health advertisements might influence the food intake of an increasingly dieting-concerned population. This article addresses this important issue by examining how consumers who are concerned with their diets react to rich images of unhealthy food consumption. Results of two experiments show that exposure to food advertisements containing unhealthy food consumption imagery reduces food intake among consumers chronically concerned with dieting, whereas a third experiment shows a similar decrease in intended consumption when a public health advertisement portrays the consumption of unhealthy food. These findings in turn offer guidelines for maximizing the effectiveness of messages that attempt to promote healthy eating habits. Additionally, this research provides theoretical contributions to the self-control and mental imagery research domains which have public policy implications for regulatory agencies and nonprofit organizations.