Article scientifique

Articles

• Food swamps predict obesity rates better than food deserts in the United States
  3 novembre 2021, par Mathilde COUDRAY

  This paper investigates the effect of food environments, characterized as food swamps, on adult obesity rates. Food swamps have been described as areas with a high-density of establishments selling high-calorie fast food and junk food, relative to healthier food options. This study examines multiple ways of categorizing food environments as food swamps and food deserts, including alternate versions of the Retail Food Environment Index. We merged food outlet, sociodemographic and obesity data from the United States Department of Agriculture (USDA) Food Environment Atlas, the American Community Survey, and a commercial street reference dataset. We employed an instrumental variables (IV) strategy to correct for the endogeneity of food environments (i.e., that individuals self-select into neighborhoods and may consider food availability in their decision). Our results suggest that the presence of a food swamp is a stronger predictor of obesity rates than the absence of full-service grocery stores. We found, even after controlling for food desert effects, food swamps have a positive, statistically significant effect on adult obesity rates. All three food swamp measures indicated the same positive association, but reflected different magnitudes of the food swamp effect on rates of adult obesity (p values ranged from 0.00 to 0.16). Our adjustment for reverse causality, using an IV approach, revealed a stronger effect of food swamps than would have been obtained by naïve ordinary least squares (OLS) estimates. The food swamp effect was stronger in counties with greater income inequality (p < 0.05) and where residents are less mobile (p < 0.01). Based on these findings, local government policies such as zoning laws simultaneously restricting access to unhealthy food outlets and incentivizing healthy food retailers to locate in underserved neighborhoods warrant consideration as strategies to increase health equity.

• Frontières alimentaires et mets transfrontaliers. La pizza, questionnement d’un paradoxe
  26 octobre 2021, par Mathilde COUDRAY

  Attestée depuis au moins le XVIe siècle à Naples, la pizza a connu au XXe siècle et plus particulièrement après la Seconde Guerre mondiale une diffusion quasi universelle. Met aux racines archaïques devenu étendard de la modernité, la pizza a traversé l’histoire comme les aires géographiques et culturelles. Pourtant, cet atypique comestible transfrontalier ne signe pas l’effacement des frontières : son adoption s’accompagne toujours d’un processus de réappropriation au cours duquel elle est pétrie de traits de culture locale et s’intègre harmonieusement dans un système de règles lui préexistant. Au terme de ce processus de réappropriation auquel la malléabilité inédite de la pizza laisse prise, le mets fait à nouveau frontière pour tout autre groupe que celui qui l’a travaillé et remis en forme. La pizza est un objet culturel qui offre un exemple particulièrement intéressant de la manière dont la diversité se maintient et se renouvelle dans le flux des emprunts, et permet dans le même temps de revisiter les scénarios d’homogénéisation culturelle et culinaire, ou l’effacement des frontières qu’induirait le processus de mondialisation. Le fait est piquant, relevons le, c’est tout justement la pizza qui, plus souvent qu’à son tour, est utilisée pour témoigner de l’érosion des spécificités culturelles.

• Malaysian Food Barometer (MFB) : a study of the impact of compressed modernisation on food habits
  3 novembre 2021, par Mathilde COUDRAY

  The Malaysian society is undergoing rapid modernisation. The
  emerging middle class in Malaysia is influencing the lifestyles and traditional food habits of the main three ethnics (i.e. Malays, Chinese, and Indians). This article studied the impact of compressed modernisation on food in a multicultural context. The Malaysian Food Barometer (MFB), published in the year 2014, focuses on the socio-cultural determinants of food habits in Malaysia.

• How the microbiome challenges our concept of self
  26 octobre 2021, par Mathilde COUDRAY

  Today, the three classical biological explanations of the individual self––the immune system, the brain, the genome––are being challenged by the new field of microbiome research. Evidence shows that our resident microbes orchestrate the adaptive immune system, influence the brain, and contribute more gene functions than our own genome. The realization that humans are not individual, discrete entities but rather the outcome of ever-changing interactions with microorganisms has consequences beyond the biological disciplines. In particular, it calls into question the assumption that distinctive human traits set us apart from all other animals––and therefore also the traditional disciplinary divisions between the arts and the sciences.

• Technological transitions as evolutionary reconfiguration processes : a multi-level perspective and a case-study
  23 novembre 2021, par Mathilde COUDRAY

  This paper addresses the question of how technological transitions (TT) come about ? Are there particular patterns and mechanisms in transition processes ? TT are defined as major, long-term technological changes in the way societal functions are fulfilled. TT do not only involve changes in technology, but also changes in user practices, regulation, industrial networks, infrastructure, and symbolic meaning or culture. This paper practices ‘appreciative theory’ [R.R. Nelson, S.G. Winter, An Evolutionary Theory of Economic Change, Bellknap Press, Cambridge, MA, 1982] and brings together insights from evolutionary economics and technology studies. This results in a multi-level perspective on TT where two views of the evolution are combined : (i) evolution as a process of variation, selection and retention, (ii) evolution as a process of unfolding and reconfiguration. The perspective is empirically illustrated with a qualitative longitudinal case-study, the transition from sailing ships to steamships, 1780–1900. Three particular mechanisms in TT are described : niche-cumulation, technological add-on and hybridisation, riding along with market growth.

• A conceptual model of the food and nutrition system
  27 octobre 2021, par Mathilde COUDRAY

  The integrated model developed here included three subsystems (producer, consumer, nutrition) and nine stages (production, processing, distribution, acquisition, preparation, consumption, digestion, transport, metabolism). The integrated model considers the processes and transformations that occur within the system and relationships between the system and other systems in the biophysical and social environments. The integrated conceptual model of the food and nutrition system presents food and nutrition activities as part of a larger context and identifies linkages among the many disciplines that deal with the food and nutrition system.

• Charlas culinarias : Mexican women speak from their public kitchens
  3 novembre 2021, par Mathilde COUDRAY

  By exploring how working-class Mexican women transform their home cooking abilities into an economic resource to support themselves and their families, this paper looks at the philosophical approach women give to their entrepreneurial efforts.

• Corporate concentration and technological change in the global seed industry
  26 octobre 2021, par Mathilde COUDRAY

  In the past three decades, the seed sector has experienced, and is now again experiencing, corporate concentration trends. The fallout of this consolidation is the subject of numerous concerns. However, the seed sector is rather poorly understood. Thus, it is useful to understand it better and to investigate the potential impact on the agri-food chain of the trend toward increased corporate concentration. The first part of this paper presents the main characteristics of the global seed sector, its stakeholders, and its size in the agri-food chain. Next, the corporate consolidation trends of the seed industry over the past two years are examined. The technological evolution of the seed sector is also briefly presented. In the last part of this paper, the fallout of recent mergers and acquisitions in the seed industry are analyzed. Opposing views are expressed on the impact of these mergers and acquisitions in the agri-food chain : while certain stakeholders worry about the risk of food power by the biggest companies, some others expect useful innovations.

• When food systems meet sustainability – Current narratives and implications for actions
  27 octobre 2021, par Mathilde COUDRAY

  The concept of food system has gained prominence in recent years amongst both scholars and policy-makers. Experts from diverse disciplines and backgrounds have in particular discussed the nature and origin of the “unsustainability” of our modern food systems. These efforts tend, however, to be framed within distinctive disciplinary narratives. In this paper we propose to explore these narratives and to shed light on the explicit -or implicit- epistemological assumptions, mental models, and disciplinary paradigms that underpin those. The analysis indicates that different views and interpretations prevail amongst experts about the nature of the “crisis”, and consequently about the research and priorities needed to “fix” the problem. We then explore how sustainability is included in these different narratives and the link to the question of healthy diets. The analysis reveals that the concept of sustainability, although widely used by all the different communities of practice, remains poorly defined, and applied in different ways and usually based on a relatively narrow interpretation. In so doing we argue that current attempts to equate or subsume healthy diets within sustainability in the context of food system may be misleading and need to be challenged. We stress that trade-offs between different dimensions of food system sustainability are unavoidable and need to be navigated in an explicit manner when developing or implementing sustainable food system initiatives. Building on this overall analysis, a framework structured around several entry points including outcomes, core activities, trade-offs and feedbacks is then proposed, which allows to identify key elements necessary to support the transition toward sustainable food systems.

• Toward a new philosophy of preventive nutrition : from a reductionist to a holistic paradigm to improve nutritional recommendations
  27 octobre 2021, par Mathilde COUDRAY

  The reductionist approach has been predominant to date in human nutrition research and has unraveled some of the fundamental mechanisms at the basis of food nutrients (e.g., those that involve deficiency diseases). In Western countries, along with progress in medicine and pharmacology, the reductionist approach helped to increase life expectancy. However, despite 40 y of research in nutrition, epidemics of obesity and diabetes are growing each year worldwide, both in developed and developing countries, leading to a decrease in healthy life years. Yet, interactions between nutrition-health relations cannot be modeled on the basis of a linear cause-effect relation between 1 food compound and 1 physiologic effect but rather from multicausal nonlinear relations. In other words, explaining the whole from the specific by a bottom-up reductionist approach has its limits. A top-down approach becomes necessary to investigate complex issues through a holistic view before addressing any specific question to explain the whole. However, it appears that both approaches are necessary and mutually reinforcing. In this review, Eastern and Western research perspectives are first presented, laying out bases for what could be the consequences of applying a reductionist versus holistic approach to research in nutrition vis-à-vis public health, environmental sustainability, breeding, biodiversity, food science and processing, and physiology for improving nutritional recommendations. Therefore, research that replaces reductionism with a more holistic approach will reveal global and efficient solutions to the problems encountered from the field to the plate. Preventive human nutrition can no longer be considered as “pharmacology” or foods as “drugs.”