Acute Effects on Blood Pressure Following Controlled Exposure to Cookstove Air Pollution in the STOVES Study
Background Exposure to air pollution from solid fuel used in residential cookstoves is considered a leading environmental risk factor for disease globally, but evidence for this relationship is largely extrapolated from literature on smoking, secondhand smoke, and ambient fine particulate matter ( P...
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Published in | Journal of the American Heart Association Vol. 8; no. 14; p. e012246 |
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Main Authors | , , , , , , , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
England
John Wiley and Sons Inc
16.07.2019
Wiley |
Subjects | |
Online Access | Get full text |
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Summary: | Background Exposure to air pollution from solid fuel used in residential cookstoves is considered a leading environmental risk factor for disease globally, but evidence for this relationship is largely extrapolated from literature on smoking, secondhand smoke, and ambient fine particulate matter ( PM
). Methods and Results We conducted a controlled human-exposure study (STOVES [the Subclinical Tests on Volunteers Exposed to Smoke] Study) to investigate acute responses in blood pressure following exposure to air pollution emissions from cookstove technologies. Forty-eight healthy adults received 2-hour exposures to 5 cookstove treatments (three stone fire, rocket elbow, fan rocket elbow, gasifier, and liquefied petroleum gas), spanning PM
concentrations from 10 to 500 μg/m
, and a filtered air control (0 μg/m
). Thirty minutes after exposure, systolic pressure was lower for the three stone fire treatment (500 μg/m
PM
) compared with the control (-2.3 mm Hg; 95% CI, -4.5 to -0.1) and suggestively lower for the gasifier (35 μg/m
PM
; -1.8 mm Hg; 95% CI , -4.0 to 0.4). No differences were observed at 3 hours after exposure; however, at 24 hours after exposure, mean systolic pressure was 2 to 3 mm Hg higher for all treatments compared with control except for the rocket elbow stove. No differences were observed in diastolic pressure for any time point or treatment. Conclusions Short-term exposure to air pollution from cookstoves can elicit an increase in systolic pressure within 24 hours. This response occurred across a range of stove types and PM
concentrations, raising concern that even low-level exposures to cookstove air pollution may pose adverse cardiovascular effects. |
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ISSN: | 2047-9980 2047-9980 |
DOI: | 10.1161/JAHA.119.012246 |