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Home NEWS Science News Health

Connection between home energy efficiency and respiratory health in low-income homes

Bioengineer by Bioengineer
February 11, 2019
in Health
Reading Time: 3 mins read
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New study finds people living in drafty homes in low-income, urban communities are at a higher risk of respiratory health issues

A team of investigators from the Colorado School of Public Health at the CU Anschutz Medical Campus and the University of Colorado Boulder has identified that people living in homes with high ventilation are more likely to suffer from respiratory health issues such as asthma.

The findings are published in the February issue of Environmental Research.

The Colorado Home Energy Efficiency and Respiratory Health (CHEER) study evaluated the impact of air-exchange rates on respiratory health in low-income, urban homes in the cities of Denver, Aurora, Boulder, Loveland and Fort Collins. The study revealed that many homes had high ventilation rates, also known as air-exchange rates – the rate at which outdoor air replaces indoor air within a room (median 0.54 air changes per hour; range 0.10 to 2.17).

The findings show that residents in drafty homes with higher air-exchange rates were more likely to report a chronic cough, asthma and asthma-like symptoms.

Notably, people in homes with the highest air-exchange rates were approximately four times more likely to report a chronic cough than people living in households with the lowest air-exchange rates.

Similarly, people were two to four times more likely to report asthma or asthma-like symptoms if they lived in households with the highest ventilation rates versus the lowest.

“The goal of this study was to understand the health impacts of home weatherization practices. Many of these practices focus on reducing air exchange rates between the building interior and outdoor environment,” said Elizabeth Carlton, PhD, assistant professor in Environmental and Occupational Health at the Colorado School of Public Health. “We found people in the homes with the highest air-exchange rates – the leakiest homes – were considerably more likely to report chronic cough, asthma or asthma-like symptoms. It is possible that in homes with high air-exchange rates, outdoor pollutants are entering the home and affecting health. If true, home-energy efficiency measures may be an effective way to protect health in areas with high pollution such as homes located near major roads.”

Carlton adds, “The health effects of high-exchange rates in urban areas are not well-documented, and since Americans spend approximately 90 percent of their time indoors, it’s crucial to have a better understanding of the impact of leaky homes.”

While prior studies have highlighted the potential hazards of low ventilation rates in residences, this study reveals high ventilation rates in many urban-area homes and that these high air-exchange rates may have a negative impact on respiratory health. Based on the findings, the infiltration of outdoor pollutants into leaky homes, such as traffic-related pollutants, could be a significant cause of chronic respiratory issues and an array of health outcomes.

The (CHEER) research is a cross-sectional study that enrolled 302 people in 216 non-smoking, low-income homes. A blower door test was conducted and the annual average air-exchange rate (AAER) was estimated for each house. Respiratory health was assessed using a structured questionnaire based on standard instruments. The researchers evaluated the association between AAER and respiratory symptoms, adjusting for relevant variants such as age, sex, location and both indoor and outdoor pollution.

“This study was a one-of-a-kind opportunity to combine engineering, geography and public health expertise,” said Shelly Miller, PhD, professor in Mechanical Engineering at the University of Colorado Boulder. “We hope that the results of our research will help rethink how we expend energy in homes for heating and cooling and how we best ventilate homes, especially in under-resourced communities that often live in polluted urban areas.”

###

This study was developed under an assistance agreement awarded by the U.S. Environmental Protection Agency.

About the University of Colorado Anschutz Medical Campus

The University of Colorado Anschutz Medical Campus is a world-class medical destination at the forefront of life-changing science, medicine, and healthcare. CU Anschutz serves over 4,500 students and offers more than 40 degree programs through six schools and colleges. We are the largest provider of professional health education in Colorado, awarding over 1,400 degrees annually and home to Children’s Hospital Colorado and UCHealth University of Colorado Hospital. Powered by our award-winning faculty, renowned researchers and a reputation for academic excellence, and with over $500 million in research awards in 2018, the CU Anschutz Medical Campus drives innovation from the classroom to the laboratory to the delivery of unparalleled patient care.

About the University of Colorado Boulder

As one of only 34 U.S. public research institutions in the Association for American Universities (AAU), the University of Colorado Boulder is all about realizing the positive impacts of new knowledge. From offering dozens of exciting programs in a range of academic fields, to serving as one of the world’s most dynamic research and innovation hubs, to working closely through hundreds of public outreach efforts with communities across Colorado and the world, we take pride in helping our students, faculty, staff and partners turn new ideas into productive outcomes that change lives.

Media Contact
Julia Milzer
[email protected]
303-724-6918

Tags: Energy SourcesHealth CareHealth Care Systems/ServicesImmigrants & MigrationInternal MedicineMedicine/HealthMinoritiesPublic HealthPulmonary/Respiratory MedicineSocioeconomics
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