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Tests on Gulf spill cleanup workers show altered blood chemistry

Exposure to oil, dispersants heightens cancer risk

oil spillResearchers studying a small sampling of workers who’d helped clean up the 2010 Gulf of Mexico oil spill found significantly altered blood profiles that could indicate an increased risk of certain kinds of cancer.

The study by researchers at the University Cancer and Diagnostic Centers in Houston, Texas included subjects that had been exposed and unexposed to the oil spill and dispersant. Using medical charts, clinical data including white blood cell count, platelets count, hemoglobin, hematocrit, blood urea nitrogen, creatinine, alkaline phosphatase (ALP), aspartate amino transferase (AST), alanine amino transferase (ALT), and somatic symptom complaints by the subjects were reviewed and analyzed.

Those exposed to the hazardous chemicals in oil and dispersants had lower platelet, blood urea and creatinine counts and higher hemoglobin and hematocrit levels – findings related to a greater risk of developing liver cancer, lymphoma, myelomas and leukemia, among other diseases.

Oil contains benzene, a known carcinogen that is easily absorbed through the skin.

The study by Mark A. D'Andrea, MD, FACRO and G. Kesava Reddy, PhD, MHA was published in the September issue of The American Journal of Medicine. It encompassed symptoms reported by clean-up workers in the two years following the spill that included headaches, rashes, chronic coughs and shortness of breath.

More than 170,000 people helped clean up after the spill from BP’s Macondo well. Although protective gear was widely distributed, the hot and humid weather of the region may have caused some people to remove protective clothing.

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