Worldwide, studies on asthma prevalence have shown major rises over the last 30 years. The impact on the burden of asthma is being increasingly recognised. In some countries in Latin America, the prevalence of asthma is among the highest in the world. Asthma admissions are very common in children, l...eading to high costs for the health systems of those countries. Unfortunately, Latin America has limited resources to pay for appropriate treatment. The main goals of the international guidelines for asthma treatment are not being met. However, asthma programmes operating in some countries are showing promising results in reducing asthma admissions and consequently decreasing the burden of asthma. Local adaptation of international guidelines must be implemented in order to decrease costs and optimise outcomes.
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There is increasing interest in understanding the role of air pollution as one of the greatest threats to human health worldwide. Nine of 10 individuals breathe air with polluted compounds that have a great impact on lung tissue. The nature of the relationship is complex, and new or updated data are... constantly being reported in the literature. The goal of our review was to summarize the most important air pollutants and their impact on the main respiratory diseases (chronic obstructive pulmonary disease, asthma, lung cancer, idiopathic pulmonary fibrosis, respiratory infections, bronchiectasis, tuberculosis) to reduce both short- and the long-term exposure consequences. We considered the most important air pollutants, including sulfur dioxide, nitrogen dioxide, carbon monoxide, volatile organic compounds, ozone, particulate matter and biomass smoke, and observed their impact on pulmonary pathologies. We focused on respiratory pathologies, because air pollution potentiates the increase in respiratory diseases, and the evidence that air pollutants have a detrimental effect is growing. It is imperative to constantly improve policy initiatives on air quality in both high- and low-income countries.
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Harm reduction: evidence, impacts and challenges
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