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Chemical in many air fresheners may reduce lung function

e products are used, it's important that we understand the effects that even low levels might have on the respiratory system," said Leslie Elliott, Ph.D. a researcher on the NIEHS-funded study. "There has been very little research on the health effects of this particular compound in non-occupational settings."

The researchers used data from the third National Health and Nutrition Examination Survey (NHANES) and a special component of the study specifically designed to assess the level of common pesticides and VOCs in the US population. NHANES III is a nationally representative survey conducted by the Centers for Disease Control and Prevention between 1988-1994 to determine the health and nutritional status of the U.S. population.

Data from 953 adults 20-59 years old who had both VOC blood measures and pulmonary function measures are included in the study published in the August issue of Environmental Health Perspectives. Four pulmonary function measures were used in the analyses. The researchers found modest reductions in pulmonary function with increasing blood concentrations of 1,4 DCB.

There was approximately a 4 percent decrease in the test which measures forced expiratory volume in 1(FEV1) second between the highest and lowest levels of exposure. FEV1 is a commonly used index for assessing airway function and obstruction.

The researchers assessed the influence of other factors in an individual's environment that may be related to pulmonary function and to 1,4-DCB exposure, such as type of heating, use of wood fires, age of house, presence of furred pets, occupation, socioeconomic status, environmental tobacco smoke, smoking history, and diagnosis of asthma or emphysema. The authors noted that participants might have been exposed to other agents not assessed in this study1that have been linked to both respiratory impairment and levels of 1,4-DCB.

"This research suggests that 1,4-DCB may exacerbate respirato
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Source:NIH/National Institute of Environmental Health Sciences


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