Riverine food environments and food security: a case study of the Mekong River, Cambodia.

Rivers are critical, but often overlooked, parts of food systems. They have multiple functions that support the food security, nutrition, health and livelihoods of the communities surrounding them. However, given current unsustainable food system practices, damming and climate change, the majority of the world's largest rivers are increasingly susceptible to environmental degradation, with negative implications for the communities that rely on them. Here we describe the dynamism and multifaceted nature of rivers as food environments (i.e. the place within food systems where people obtain their food) and their role in securing food security including improved diets and overall health. We also provide a conceptual framework that explain rivers as food environments within the broader food system and describe approaches to characterizing these food environments to better inform our understanding of how they influence food security and nutrition outcomes. Applying this framework to the Mekong River in Cambodia, we describe rivers as multifaceted wild food environments embedded within ecosystems, sociocultural and political environments and sectors of influence. We also explain the ways in which individual factors might influence how communities interact with this food environment. Developing and articulating food-related, ecosystem-specific frameworks and their constructs can guide implementation of policies aimed to improve specific public health or environmental sustainability outcomes. Our conceptual framework incorporates the multiple dimensions of rivers, which will aid future work and public health policy framing to better describe, understand and intervene to ensure protection of rivers' biodiversity and ecosystems as well as food security, health and livelihoods.

Souvent négligés, les cours d'eau jouent pourtant un rôle vital dans les systèmes alimentaires. Ils remplissent de nombreuses fonctions qui contribuent à la sécurité alimentaire, à la nutrition, à la santé et aux moyens de subsistance des communautés avoisinantes. Toutefois, en raison d'un système alimentaire actuel aux pratiques non durables, de la construction de barrages et du changement climatique, la plupart des grands fleuves et rivières du monde sont de plus en plus exposés aux dégradations environnementales, avec des conséquences néfastes pour les communautés qui en dépendent. Dans le présent document, nous évoquons le dynamisme et les multiples facettes des cours d'eau en tant qu'environnements alimentaires (c'est-à-dire l'endroit où les gens se procurent de la nourriture au sein d'un système alimentaire), ainsi que la manière dont ils favorisent la sécurité alimentaire, notamment par le biais d'un régime plus équilibré et d'une meilleure santé en général. Nous fournissons également un cadre conceptuel qui définit les cours d'eau comme environnements alimentaires au sein d'un système plus vaste et décrit les approches caractérisant ces environnements, afin que nous puissions mieux comprendre l'influence qu'ils exercent sur la sécurité alimentaire et la nutrition. En appliquant ce cadre au fleuve Mékong, au Cambodge, nous dévoilons les multiples facettes de ces environnements alimentaires naturels variés qui font partie intégrante des écosystèmes, des milieux politiques et socioculturels, mais aussi des sphères d'influence. Nous expliquons en outre la façon dont certains facteurs individuels sont susceptibles d'interférer dans les interactions que les communautés entretiennent avec cet environnement alimentaire. Développer et formuler des cadres et structures liés à l'alimentation, propres à chaque écosystème, peut orienter la mise en œuvre de mesures visant à améliorer des résultats spécifiques dans le domaine de la santé publique ou de la préservation de l'environnement. Notre cadre conceptuel inclut les différents aspects des cours d'eau, ce qui aidera à mener de futurs travaux et à élaborer des politiques de santé publique pour mieux les qualifier, les appréhender et intervenir en vue d'assurer la protection de la biodiversité et des écosystèmes fluviaux ainsi que la sécurité alimentaire, la santé et les moyens de subsistance.

Los ríos son partes fundamentales de los sistemas alimentarios, pero con frecuencia se ignoran. Tienen múltiples funciones que favorecen la seguridad alimentaria, la nutrición, la salud y los medios de vida de las comunidades que los rodean. Sin embargo, dadas las actuales prácticas insostenibles del sistema alimentario, la construcción de embalses y el cambio climático, la mayoría de los ríos más grandes del mundo son cada vez más susceptibles a la degradación medioambiental, con implicaciones negativas para las comunidades que dependen de ellos. En este documento, se describe el dinamismo y la naturaleza polifacética de los ríos como entornos alimentarios (es decir, el lugar dentro de los sistemas alimentarios donde las personas obtienen sus alimentos) y su función para garantizar la seguridad alimentaria, incluida la mejora de los hábitos alimentarios y la salud en general. Asimismo, se proporciona un marco conceptual que explica los ríos como entornos alimentarios dentro del sistema alimentario en su conjunto y se describen enfoques para caracterizar estos entornos alimentarios con el fin de comprender mejor cómo influyen en los resultados de la seguridad alimentaria y la nutrición. Mediante la aplicación de este marco al río Mekong en Camboya, se describen los ríos como entornos alimentarios silvestres multifacéticos integrados en ecosistemas, entornos socioculturales y políticos y sectores de influencia. Además, se explican cómo los factores individuales pueden influir en la interacción de las comunidades con este entorno alimentario. El desarrollo y la articulación de marcos específicos de los ecosistemas relacionados con la alimentación y sus constructos pueden orientar la aplicación de políticas destinadas a mejorar determinados resultados en materia de salud pública o sostenibilidad medioambiental. El marco conceptual que se presenta incorpora las múltiples dimensiones de los ríos, lo que ayudará en futuros trabajos y en la formulación de políticas de salud pública a describir, comprender e intervenir mejor para asegurar la protección de la biodiversidad y los ecosistemas fluviales, así como la seguridad alimentaria, la salud y los medios de subsistencia.

Underutilized and Under Threat: Environmental Policy as a Tool to Address Diabetes Risk.

PURPOSE OF REVIEW: Diabetes is a burgeoning threat to public health in the USA. Importantly, the burden of diabetes is not equally borne across society with marked disparities based on geography, race/ethnicity, and income. The etiology of global and population-specific diabetes risk remains incompletely understood; however, evidence linking environmental toxicants acting as endocrine-disrupting chemicals (EDCs), such as particulate matter and arsenic, with diabetes suggests that environmental policies could play an important role in diabetes risk reduction. RECENT FINDINGS: Evidence suggests that disproportionate exposures to EDCs may contribute to subgroup-specific diabetes risk; however, no federal policies regulate EDCs linked to diabetes based upon diabetogenic potential. Nevertheless, analyses of European Union data indicate that such regulation could reduce diabetes-associated costs and disease burden. Federal laws only regulate EDCs indirectly. The accumulating evidence linking these chemicals with diabetes risk should encourage policymakers to adopt stricter environmental standards that consider both health and economic impacts.

Comparative Evaluation of the Sealing Ability of Mineral Trioxide Aggregate (MTA)-Based, Resin-Based, and Zinc Oxide Eugenol Root Canal Sealers: An In Vitro Study.

Root canal therapy is a crucial procedure in endodontics that is done to achieve complete obliteration of the root canal space. The success of this therapy depends on achieving a proper seal, which is facilitated using root canal sealers. This study aimed to compare the apical sealing ability of three different root canal sealers: MTA Fillapex, AH Plus, and zinc oxide eugenol (ZOE), using the dye penetration method. Forty freshly extracted single-rooted human maxillary incisors were collected and prepared for the study. The root canals were instrumented using the ProTaper system, and the canals were then obturated using the lateral condensation technique with the respective sealers. After one week of storage, the samples were coated with nail varnish, immersed in a rhodamine B dye solution, and then sectioned longitudinally. The depth of dye penetration was measured, and the results were analyzed statistically. The results revealed significant differences in apical leakage among the three experimental groups. Group 2 (AH Plus) showed the minimum leakage with a mean of 0.13 mm, while Group 4 (no sealer) exhibited the maximum leakage with a mean of 4.49 mm. Group 3 (ZOE) showed an intermediate level of leakage with a mean of 2.37 mm. The statistical analysis confirmed the significant difference in mean leakage among the groups. The findings of this study indicate that AH Plus exhibited superior apical sealing ability compared to MTA Fillapex and ZOE. AH Plus is a resin-based sealer known for its dimensional stability. On the other hand, MTA Fillapex, a newly introduced sealer containing mineral trioxide aggregate, resin, and silica, showed promising sealing properties but had slightly higher leakage compared to AH Plus. ZOE, a traditional sealer, demonstrated relatively higher leakage than the other sealers. In conclusion, choosing a root canal sealer is crucial in achieving a successful endodontic treatment outcome. AH Plus demonstrated superior apical sealing ability among the three sealers tested. Further research and long-term clinical studies are warranted to validate these findings and assess the impact of sealer choice on treatment outcomes and post-endodontic healing.

Association between environmental quality and diabetes in the USA.

AIMS/INTRODUCTION: Caloric excess and physical inactivity fail to fully account for the rise of diabetes prevalence. Individual environmental pollutants can disrupt glucose homeostasis and promote metabolic dysfunction. However, the impact of cumulative exposures on diabetes risk is unknown. MATERIALS AND METHODS: The Environmental Quality Index, a county-level index composed of five domains, was developed to capture the multifactorial ambient environmental exposures. The Environmental Quality Index was linked to county-level annual age-adjusted population-based estimates of diabetes prevalence rates. Prevalence differences (PD, annual difference per 100,000 persons) and 95% confidence intervals (CI) were estimated using random intercept mixed effects linear regression models. Associations were assessed for overall environmental quality and domain-specific indices, and all analyses were stratified by four rural-urban strata. RESULTS: Comparing counties in the highest quintile/poorest environmental quality to those in the lowest quintile/best environmental quality, counties with poor environmental quality demonstrated lower total diabetes prevalence rates. Associations varied by rural-urban strata; overall better environmental quality was associated with lower total diabetes prevalence rates in the less urbanized and thinly populated strata. When considering all counties, good sociodemographic environments were associated with lower total diabetes prevalence rates (prevalence difference 2.77, 95% confidence interval 2.71-2.83), suggesting that counties with poor sociodemographic environments have an annual prevalence rate 2.77 per 100,000 persons higher than counties with good sociodemographic environments. CONCLUSIONS: Increasing attention has focused on environmental exposures as contributors to diabetes pathogenesis, and the present findings suggest that comprehensive approaches to diabetes prevention must include interventions to improve environmental quality.

Molecular tools for bathing water assessment in Europe: Balancing social science research with a rapidly developing environmental science evidence-base.

The use of molecular tools, principally qPCR, versus traditional culture-based methods for quantifying microbial parameters (e.g., Fecal Indicator Organisms) in bathing waters generates considerable ongoing debate at the science-policy interface. Advances in science have allowed the development and application of molecular biological methods for rapid (~2 h) quantification of microbial pollution in bathing and recreational waters. In contrast, culture-based methods can take between 18 and 96 h for sample processing. Thus, molecular tools offer an opportunity to provide a more meaningful statement of microbial risk to water-users by providing near-real-time information enabling potentially more informed decision-making with regard to water-based activities. However, complementary studies concerning the potential costs and benefits of adopting rapid methods as a regulatory tool are in short supply. We report on findings from an international Working Group that examined the breadth of social impacts, challenges, and research opportunities associated with the application of molecular tools to bathing water regulations.