Air Pollution

According to a recently released report by the World Health Organization (WHO), air pollution is the single greatest environmental health risk throughout the world. The WHO reports that globally, 1 in 8 deaths are linked to air pollution. The results from this study come from mortality data in 2012, when an estimated 7 million people died from exposure to air pollution. These new figures nearly double the previously assumed number of deaths associated with air pollution. Improvements in measurements, technology, and demographic analysis have lead to these new finding of the associations between low quality indoor and outdoor air with cardiovascular diseases such as, stroke, ischaemic heart disease, and cancer. The WHO has determined that the vast majority of deaths related to indoor air pollution in 2012 were linked to households that primarily cooked using coal, wood, or biomass stoves. For deaths by outdoor air pollution, the WHO determined that the estimated 3.7 million lives lost resulted from pollution by urban and rural sources. Everyday, people are exposed to both indoor and outdoor air pollution with realization of it. Due to this overlap of the ambient environment, mortality figures of the two sources could not be added together; therefore the resulting estimate of mortality by air pollution was estimated to be 7 million. To little surprise, among the highest at greatest risk for air pollution related diseases include people living in low and middle-income countries – countries in Southeast Asia and Western Pacific Regions. Countries like China and India have experienced rapid and continual industrial growth resulting in heavy amounts of air pollution. In these regions, total deaths from indoor air pollution and outdoor air pollution in 2012 were 3.3 million and 2.6 million, respectively. “Excessive air pollution is often a by-product of unsustainable policies in sectors such as transport, energy, waste management and industry. In most cases, healthier strategies will also be more economical in the long term due to health-care cost savings as well as climate gains,” says Dr. Carlos Dora, WHO Coordinator for Public Health, Environmental and Social Determinants of Health. “WHO and health sectors have a unique role in translating scientific evidence on air pollution into policies that can deliver impact and improvements that will save lives.” The following assessment is a breakdown of air pollution deaths by specific diseases:

http://www.who.int/mediacentre/news/releases/2014/air-pollution/en/

By Wendy Chiapaikeo

Outdoor air pollution-caused deaths –breakdown by disease:

 40% – ischaemic heart disease  40% – stroke  11% – chronic obstructive pulmonary disease (COPD)  6% - lung cancer  3% – acute lower respiratory infections in children

Indoor air pollution-caused deaths –breakdown by disease:

 34% - stroke  26% - ischaemic heart disease  22% - COPD  12% - acute lower respiratory infections in children  6% - lung cancer

According to Dr Maria Neira, Director of WHO’s Department for Public Health, Environmental and Social Determinants of Health, “Few risks have a greater impact on global health today than air pollution; the evidence signals the need for concerted action to clean up the air we all breathe.” This report is the beginning of further research in this area. The aim of the WHO’s work is to influence global public health policy and implementations to address this health problem and overall lower mortalities rates from indoor and outdoor air pollution.