Previous research has linked the fracking industry, for example, to an increase in such adverse reproductive outcomes as preterm births and lower birth weights, and also to a variety of symptoms such as those involving the skin or upper respiratory tract. In previous research, stress has been implicated in substantially increasing the risk of asthma attacks. The new study can’t pinpoint why asthma attacks are more likely closer to more or larger wells, though researchers say that air pollution and increased stress levels from the noise, traffic and other community impacts associated with the industry could play a role. The findings held up even when accounting for other factors that can exacerbate asthma, including proximity to major roads, family history, smoking, socioeconomics and more. And while these asthma attacks were likely to occur more frequently around wells throughout the four phases of the development process, the researchers found that the increased risk was greater during the production phase, which can last many years. Those who lived closer to a large number or bigger active natural gas wells were significantly more likely – 1.5 to four times more likely – to suffer asthma attacks. They mapped where the patients with these attacks lived assigned them metrics based on the location, size, number, phase, total depth and gas production of the wells and compared them to asthma patients who didn’t have attacks in the same year. They identified 20,749 mild attacks (requiring a corticosteroid prescription), 1,870 moderate ones (requiring an emergency room visit) and 4,782 severe attacks (requiring hospitalization). “Going forward, we need to focus on the exact reasons why these things are happening, because if we know why, we can help make the industry safer.”įor the study, Rasmussen and her colleagues analyzed health records from 2005 through 2012 from the Geisinger Health System, a health care provider that covers 40 counties in north and central Pennsylvania. The study is a joint effort of the Bloomberg School and the Geisinger Health System. Hopkins researchers identified more than 35,000 asthma patients between the ages of five and 90 years. Rasmussen, MHS, a PhD candidate in the Bloomberg School’s Department of Environmental Health Sciences. “Ours is the first to look at asthma but we now have several studies suggesting adverse health outcomes related to the drilling of unconventional natural gas wells,” says study leader Sara G. The fracking industry has developed more than 9,000 wells in Pennsylvania in just the past decade. Health officials have been concerned about the effect of this type of drilling on air and water quality, as well as the stress of living near a well where just developing the site of the well can require more than 1,000 truck trips on once-quiet roads. The findings, published July 18 in JAMA Internal Medicine, add to a growing body of evidence tying the fracking industry to health concerns. People with asthma who live near bigger or larger numbers of active unconventional natural gas wells operated by the fracking industry in Pennsylvania are 1.5 to four times likelier to have asthma attacks than those who live farther away, new Johns Hopkins Bloomberg School of Public Health research suggests. Evidence growing of health problems linked to active unconventional natural gas wells
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