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Estrogen and Androgen Receptor Activities of Hydraulic Fracturing Chemicals and Surface and Ground Water in a Drilling-Dense Region

Estrogen and Androgen Receptor Activities of Hydraulic Fracturing Chemicals and Surface and Ground Water in a Drilling-Dense Region

Author(s):
Susan C. Nagel, Christopher D. Kassotis and Donald E. Tillitt

Date:
12.2013

Source / Publisher:
Endocrinology

Key findings:

  • Hormone disruptors in water supplies near fracking sites in Colorado at levels high enough to alter hormonal signaling in living cells link to cancer, birth defects and infertility.
  • 11 chemicals commonly used in the controversial “fracking” method of drilling for oil and natural gas are endocrine disruptors.
  • Of 39 unique water samples collected in Garfield County, Colorado, 89 % exhibited estrogenic, 41 % anti-estrogenic, 12 % androgenic, and 46 % anti-androgenic activities.
  • Among the chemicals that the fracking industry has reported using most often, all 24 that were tested block the activity of one or more important hormone receptors.
  • The US scientists took surface and ground water samples from sites where drilling spills and accidents were known to have occurred.

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