Colorado Study Links Childhood Leukemia to Oil and Gas Development

Colorado children with acute lymphocytic leukemia are more than twice as likely to live near dense oil and gas development, including fracking sites, according to a new study in Cancer Epidemiology, Biomarkers & Prevention. Researchers reviewed data from over 3,000 children born between 1992 and 2019, finding significantly higher cancer risk for those living within 3–8 miles of high-density well activity.

The study considered well proximity, drilling activity, and production volume—while controlling for other cancer risk factors. Emissions like benzene and PAHs, known carcinogens, are commonly released by these wells.

While Colorado has strengthened its setback laws, setting a 2,000-foot buffer from homes and schools, Pennsylvania’s 500-foot limit remains among the nation’s weakest. Public health advocates warn such distances may be inadequate to protect vulnerable communities, especially children.

19-06-2025