Open AccessAcute Effects on Blood Pressure Following Controlled Exposure to Cookstove Air Pollution in the STOVES Study
Author(s) -
Fedak Kristen M.,
Good Nicholas,
Walker Ethan S.,
Balmes John,
Brook Robert D.,
Clark Maggie L.,
ColeHunter Tom,
Devlin Robert,
L'Orange Christian,
Luckasen Gary,
Mehaffy John,
Shelton Rhian,
Wilson Ander,
Volckens John,
Peel Jennifer L.
Publication year - 2019
Publication title -
journal of the american heart association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.494
H-Index - 85
ISSN - 2047-9980
DOI - 10.1161/jaha.119.012246
Subject(s) - stove , blood pressure , smoke , air pollution , medicine , environmental science , waste management , chemistry , engineering , organic chemistry
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 2.5 ). 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 2.5 concentrations from 10 to 500 μg/m 3 , and a filtered air control (0 μg/m 3 ). Thirty minutes after exposure, systolic pressure was lower for the three stone fire treatment (500 μg/m 3 PM 2.5 ) compared with the control (−2.3 mm Hg; 95% CI, −4.5 to −0.1) and suggestively lower for the gasifier (35 μg/m 3 PM 2.5 ; −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 2.5 concentrations, raising concern that even low‐level exposures to cookstove air pollution may pose adverse cardiovascular effects.