Map of Evidence: interventions to reduce exposure to household air pollution

This evidence map was developed to identify, summarize, and communicate to key stakeholders the findings of evidence on interventions to reduce exposure to household air pollution (HAP). The map synthesizes evidence from 48 literature reviews published on technological and sociocultural interventions and others (potentialities of public policies like incentives) to address health, environmental and economic impacts associated to HAP. Furthermore, this map seeks to inform decision-making processes on strategic interventions and most effective policies. Main results: Most of the existing HAP interventions to address indoor air quality have been focused on evaluating improved stove interventions that still use solid fuels (n = 39). It has been identified that Interventions with clean fuels (LPG, electricity, and others) are the most effective in impacting the health outcomes and reducing household air pollutants. Only six reviews analyzed or reported outcomes of sociocultural interventions (health education) aimed at reducing air pollution in homes; some showed positive impacts on health. Three reviews reported the effects of changes in people's behaviors when cooking food, which have improved indoor air quality. All authors agree on the importance of changing behavior and community practices as an essential element for the sustainability of improved kitchen interventions. Four reviews evaluated at the synergy between policies to reduce household air pollution and outdoor pollution, as well as other environmental health concerns. These reviews allow the conclusion that synergies between policies are much more effective at reducing air pollution and its impacts on the health of communities.

Monitoring and modeling of household air quality related to use of different Cookfuels in Paraguay.

In Paraguay, 49% of the population depends on biomass (wood and charcoal) for cooking. Residential biomass burning is a major source of fine particulate matter (PM2.5 ) and carbon monoxide (CO) in and around the household environment. In July 2016, cross-sectional household air pollution sampling was conducted in 80 households in rural Paraguay. Time-integrated samples (24 hours) of PM2.5 and continuous CO concentrations were measured in kitchens that used wood, charcoal, liquefied petroleum gas (LPG), or electricity to cook. Qualitative and quantitative household-level variables were captured using questionnaires. The average PM2.5 concentration (µg/m3 ) was higher in kitchens that burned wood (741.7 ± 546.4) and charcoal (107.0 ± 68.6) than in kitchens where LPG (52.3 ± 18.9) or electricity (52.0 ± 14.8) was used. Likewise, the average CO concentration (ppm) was higher in kitchens that used wood (19.4 ± 12.6) and charcoal (7.6 ± 6.5) than in those that used LPG (0.5 ± 0.6) or electricity (0.4 ± 0.6). Multivariable linear regression was conducted to generate predictive models for indoor PM2.5 and CO concentrations (predicted R2  = 0.837 and 0.822, respectively). This study provides baseline indoor air quality data for Paraguay and presents a multivariate statistical approach that could be used in future research and intervention programs.

Interventions that facilitate sustainable development by preventing toxic exposure to chemicals: an overview of systematic reviews / Intervenciones que facilitan el desarrollo sostenible al prevenir la exposición tóxica a los productos químicos: síntesis de revisiones sistemáticas

Objective. To identify interventions that 1) facilitate sustainable development by preventing toxic exposure to chemicals, including pesticides, and 2) have a positive impact on health. Methods. This overview utilized systematic review methods to synthesize evidence from multiple systematic reviews and economic evaluations. A comprehensive search was conducted based on a predefined protocol, including clear inclusion criteria. To be classified as “sustainable” interventions needed to aim (explicitly or implicitly) to 1) have a positive impact on at least two key dimensions of the United Nations integrated framework for sustainable development and 2) include measures of health impact. Results. Thirteen systematic reviews and two economic evaluations met the inclusion criteria. The interventions that were most likely to have a positive impact on health included 1) legislation to ban Endosulfan pesticide to prevent fatal poisonings; 2) testing of drinking water for contamination with arsenic, and dissemination of the results to households; and 3) implementation of organic farming / diet to reduce exposure to pesticides. However, the cost-effectiveness of these three interventions and their impact(s) on health inequalities is not known. Strict enforcement of interventions to reduce lead in houses with children was costbeneficial. Education and dust control interventions performed by cleaning professionals to reduce blood lead levels in children were ineffective. Conclusions. What is needed now is careful implementation of the interventions whose impacts are likely to be positive. Ineffective interventions need to be replaced with more effective and cost-effective interventions. Finally, more and better-quality research on the prevention of toxic exposure to chemicals is needed to better support policy development.

Objetivo. Señalar aquellas intervenciones que: 1) faciliten el desarrollo sostenible al prevenir la exposición tóxica a los productos químicos, incluidos los plaguicidas; y 2) tengan una repercusión positiva sobre la salud. Métodos. Mediante la metodología de revisión sistemática se sintetizaron los datos probatorios de varias revisiones sistemáticas y evaluaciones económicas. Se realizó una búsqueda exhaustiva siguiendo un protocolo predefinido con criterios de inclusión concretos. Para considerarse “sostenibles”, las intervenciones debían perseguir los siguientes objetivos (explícitos o implícitos): 1) influir de forma positiva sobre al menos dos dimensiones clave del marco integrado de las Naciones Unidas para el Desarrollo Sostenible; y 2) incluir medidas que repercutan en la salud. Resultados. Cumplieron los criterios de inclusión 13 revisiones sistemáticas y dos evaluaciones económicas. Las intervenciones con mayores probabilidades de influir positivamente en la salud son: 1) la prohibición por ley de los plaguicidas de endosulfán para prevenir las muertes por intoxicación; 2) los análisis del agua potable para detectar la contaminación por arsénico y la comunicación de los resultados a los hogares; y 3) la implantación de la agricultura o la alimentación orgánicas para reducir la exposición a los plaguicidas. Sin embargo, no se conoce la rentabilidad de estas tres intervenciones ni su repercusión sobre las desigualdades en la salud. La aplicación estricta de las intervenciones para reducir el plomo en los hogares con niños resultó rentable. Por el contrario, fueron ineficaces las intervenciones educativas y de desempolvado, a cargo de profesionales de la limpieza, para reducir los niveles de plomo en la sangre de los niños. Conclusiones. Es conveniente aplicar correctamente las intervenciones que tienen mayor probabilidad de generar repercusiones positivas, en tanto que las intervenciones ineficaces deben sustituirse por otras más eficaces y rentables. Se necesitan más investigaciones y de mejor calidad sobre la prevención de la exposición tóxica a los productos químicos, para mejorar las bases sobre las cuales sustentar las correspondientes políticas.

Interventions that facilitate sustainable development by preventing toxic exposure to chemicals: an overview of systematic reviews / Intervenciones que facilitan el desarrollo sostenible al prevenir la exposición tóxica a los productos químicos: síntesis de revisiones sistemáticas

ABSTRACT Objective To identify interventions that 1) facilitate sustainable development by preventing toxic exposure to chemicals, including pesticides, and 2) have a positive impact on health. Methods This overview utilized systematic review methods to synthesize evidence from multiple systematic reviews and economic evaluations. A comprehensive search was conducted based on a predefined protocol, including clear inclusion criteria. To be classified as “sustainable” interventions needed to aim (explicitly or implicitly) to 1) have a positive impact on at least two key dimensions of the United Nations integrated framework for sustainable development and 2) include measures of health impact. Results Thirteen systematic reviews and two economic evaluations met the inclusion criteria. The interventions that were most likely to have a positive impact on health included 1) legislation to ban Endosulfan pesticide to prevent fatal poisonings; 2) testing of drinking water for contamination with arsenic, and dissemination of the results to households; and 3) implementation of organic farming / diet to reduce exposure to pesticides. However, the cost-effectiveness of these three interventions and their impact(s) on health inequalities is not known. Strict enforcement of interventions to reduce lead in houses with children was cost-beneficial. Education and dust control interventions performed by cleaning professionals to reduce blood lead levels in children were ineffective. Conclusions What is needed now is careful implementation of the interventions whose impacts are likely to be positive. Ineffective interventions need to be replaced with more effective and cost-effective interventions. Finally, more and better-quality research on the prevention of toxic exposure to chemicals is needed to better support policy development.

RESUMEN Objetivo Señalar aquellas intervenciones que: 1) faciliten el desarrollo sostenible al prevenir la exposición tóxica a los productos químicos, incluidos los plaguicidas; y 2) tengan una repercusión positiva sobre la salud. Métodos Mediante la metodología de revisión sistemática se sintetizaron los datos probatorios de varias revisiones sistemáticas y evaluaciones económicas. Se realizó una búsqueda exhaustiva siguiendo un protocolo predefinido con criterios de inclusión concretos. Para considerarse “sostenibles”, las intervenciones debían perseguir los siguientes objetivos (explícitos o implícitos): 1) influir de forma positiva sobre al menos dos dimensiones clave del marco integrado de las Naciones Unidas para el Desarrollo Sostenible; y 2) incluir medidas que repercutan en la salud. Resultados Cumplieron los criterios de inclusión 13 revisiones sistemáticas y dos evaluaciones económicas. Las intervenciones con mayores probabilidades de influir positivamente en la salud son: 1) la prohibición por ley de los plaguicidas de endosulfán para prevenir las muertes por intoxicación; 2) los análisis del agua potable para detectar la contaminación por arsénico y la comunicación de los resultados a los hogares; y 3) la implantación de la agricultura o la alimentación orgánicas para reducir la exposición a los plaguicidas. Sin embargo, no se conoce la rentabilidad de estas tres intervenciones ni su repercusión sobre las desigualdades en la salud. La aplicación estricta de las intervenciones para reducir el plomo en los hogares con niños resultó rentable. Por el contrario, fueron ineficaces las intervenciones educativas y de desempolvado, a cargo de profesionales de la limpieza, para reducir los niveles de plomo en la sangre de los niños. Conclusiones Es conveniente aplicar correctamente las intervenciones que tienen mayor probabilidad de generar repercusiones positivas, en tanto que las intervenciones ineficaces deben sustituirse por otras más eficaces y rentables. Se necesitan más investigaciones y de mejor calidad sobre la prevención de la exposición tóxica a los productos químicos, para mejorar las bases sobre las cuales sustentar las correspondientes políticas.

Children's health in Latin America: the influence of environmental exposures.

BACKGROUND: Chronic diseases are increasing among children in Latin America. OBJECTIVE AND METHODS: To examine environmental risk factors for chronic disease in Latin American children and to develop a strategic initiative for control of these exposures, the World Health Organization (WHO) including the Pan American Health Organization (PAHO), the Collegium Ramazzini, and Latin American scientists reviewed regional and relevant global data. RESULTS: Industrial development and urbanization are proceeding rapidly in Latin America, and environmental pollution has become widespread. Environmental threats to children's health include traditional hazards such as indoor air pollution and drinking-water contamination; the newer hazards of urban air pollution; toxic chemicals such as lead, asbestos, mercury, arsenic, and pesticides; hazardous and electronic waste; and climate change. The mix of traditional and modern hazards varies greatly across and within countries reflecting industrialization, urbanization, and socioeconomic forces. CONCLUSIONS: To control environmental threats to children's health in Latin America, WHO, including PAHO, will focus on the most highly prevalent and serious hazards-indoor and outdoor air pollution, water pollution, and toxic chemicals. Strategies for controlling these hazards include developing tracking data on regional trends in children's environmental health (CEH), building a network of Collaborating Centres, promoting biomedical research in CEH, building regional capacity, supporting development of evidence-based prevention policies, studying the economic costs of chronic diseases in children, and developing platforms for dialogue with relevant stakeholders.