TAILIEUCHUNG - Health Assessment Document For Diesel Engine Exhaust

A greater understanding of inequalities is also crucial to recognizing the limits of what promoting positive mental health can achieve. Positive mental health does confer considerable protection and advantage, but it does so predominantly among those with equal levels of resources. In other words, among poor children, those with higher levels of emotional wellbeing have better educational outcomes than their equally poor peers. However, richer children generally do better still, regardless of emotional or cognitive capability. Among well off students, high positive affect is associated with improved employment outcomes, but among poorer students, parental income is a more significant determinant | 4 1 United States Environmental Protection M F Agency Health Assessment Document For Diesel Engine Exhaust EPA 600 8-90 057F May 2002 Health Assessment Document for Diesel Engine Exhaust National Center for Environmental Assessment Office of Research and Development . Environmental Protection Agency Washington DC DISCLAIMER This document has been reviewed in accordance with . Environmental Protection Agency policy and approved for publication. Mention of trade names or commercial products does not constitute endorsement or recommendation for use. ABSTRACT This assessment examined information regarding the possible health hazards associated with exposure to diesel engine exhaust DE which is a mixture of gases and particles. The assessment concludes that long-term . chronic inhalation exposure is likely to pose a lung cancer hazard to humans as well as damage the lung in other ways depending on exposure. Short-term . acute exposures can cause irritation and inflammatory symptoms of a transient nature these being highly variable across the population. The assessment also indicates that evidence for exacerbation of existing allergies and asthma symptoms is emerging. The assessment recognizes that DE emissions as a mixture of many constituents also contribute to ambient concentrations of several criteria air pollutants including nitrogen oxides and fine particles as well as other air toxics. The assessment s health hazard conclusions are based on exposure to exhaust from diesel engines built prior to the mid-1990s. The health hazard conclusions in general are applicable to engines currently in use which include many older engines. As new diesel engines with cleaner exhaust emissions replace existing engines the applicability of the conclusions in this Health Assessment Document will need to be reevaluated. Preferred citation . Environmental Protection Agency EPA . 2002 Health assessment document for diesel engine exhaust. Prepared by the National Center .

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