Harvard researchers provide further evidence that, as one environmental advocate has said, “fracking is inherently hazardous to the health and safety of people and communities in proximity to it.”
Elderly individuals who live near or downwind of fracking and other “unconventional” drilling operations are at higher risk of early death compared with seniors who don’t live in close proximity to such sites, according to a new study out Thursday from the Harvard T.H. Chan School of Public Health.
Airborne contaminants from more than 2.5 million oil and gas wells across the U.S., researchers wrote in a paper published in the peer-reviewed journal Nature Energy, are contributing to increased mortality among people 65 and older residing in neighborhoods close to or downwind from what is called unconventional oil and gas development (UOGD)—extraction methods that include directional (non-vertical) drilling and hydraulic fracturing.
“Although UOGD is a major industrial activity in the U.S., very little is known about its public health impacts,” Petros Koutrakis, professor of environmental sciences and one of the paper’s co-authors, said in a statement. “Our study is the first to link mortality to UOGD-related air pollutant exposures.”
Co-author Francesca Dominici, professor of biostatistics, population, and data science, added that “there is an urgent need to understand the causal link between living near or downwind of UOGD and adverse health effects.”
Earlier research, the Harvard Chan School acknowledged in its press release, has “found connections between UOGD activities and increased human exposure to harmful substances in both air and water, as well as connections between UOGD exposure and adverse prenatal, respiratory, cardiovascular, and carcinogenic health outcomes. But little was known about whether exposure to UOGD was associated with mortality risk in the elderly, or about exactly how exposure to UOGD-related activities may be contributing to such risk.”
To find out more, a team of 10 scholars analyzed a cohort of nearly 15.2 million Medicare beneficiaries living in all of the nation’s major UOGD exploration regions from 2001 to 2015. They also examined data collected from more than 2.5 million oil and gas wells.
For each Medicare recipient’s ZIP code and year in the cohort, researchers calculated what pollutant exposures would be if one lived close to UOGD operations, downwind of them, or both, while adjusting for socioeconomic, environmental, and demographic factors.
The closer people lived to fracked gas and other unconventional wells, the greater their risk of premature mortality, researchers found.
According to the Harvard Chan School’s summary of the study:
Those who lived closest to wells had a statistically significant elevated mortality risk (2.5% higher) compared with those who didn’t live close to wells. The study also found that people who lived near UOGD wells as well as downwind of them were at higher risk of premature death than those living upwind, when both groups were compared with people who were unexposed.
“Our findings suggest the importance of considering the potential health dangers of situating UOGD near or upwind of people’s homes,” said Longxiang Li, a postdoctoral fellow in the Department of Environmental Health and lead author of the study.
The new study adds to a growing body of literature linking fossil fuels to negative health outcomes. In a recent report, the World Health Organization warned that burning coal, oil, and gas is “causing millions of premature deaths every year through air pollutants, costing the global economy billions of dollars annually, and fueling the climate crisis.”
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