Yet another study has determined that hydraulic fracturing, or fracking, might be a major public health threat. In one of the most exhaustive reviews to date, researchers from the Yale School of Public Health have confirmed that many of the chemicals involved and released by the controversial drilling process can be linked to cancer.
"Previous studies have examined the carcinogenicity of more selective lists of chemicals," lead author Nicole Deziel, Ph.D., assistant professor explained to the school. "To our knowledge, our analysis represents the most expansive review of carcinogenicity of hydraulic fracturing-related chemicals in the published literature."
For the study, published in Science of the Total Environment, the researchers assessed the carcinogenicity of 1,177 water pollutants and 143 air pollutants released by the fracking process and from fracking wastewater. They found that 55 unique chemicals could be classified as known, probable or possible human carcinogens. They also specifically identified 20 compounds that had evidence of leukemia/lymphoma risk.