For years, people living and working at Camp Lejeune in Jacksonville, N.C., drank and showered in water contaminated with trichloroethylene (TCE) and other industrial solvents. Now, a Centers for Disease Control and Prevention (CDC) study has determined that the exposure markedly increased their risk for certain cancers.
In one of the largest cohort cancer incidence studies ever completed in the US, researchers compared cancer risk between 161,315 military personnel and civilian workers at Camp Lejeune and 169,281 military personnel and civilian workers at Camp Pendleton in Oceanside, Calif., where the water was not contaminated.
Data from diagnoses between 1996 and 2017 documented 12,083 cancers among Camp Lejeune Marine and Navy personnel and 1,563 among civilian workers. By comparison, 12,144 cancers were documented among Camp Pendleton personnel and 1,372 among civilian workers. However, personnel stationed at Camp Lejeune between 1975 and 1985 had at least a 20% higher risk for all myeloid cancers including polycythemia vera, acute myeloid leukemia, myelodysplastic and myeloproliferative syndromes, and cancers of the esophagus, larynx, soft tissue, and thyroid. Civilian workers had a higher risk for all myeloid cancers, squamous cell lung cancer, and female ductal breast cancer.
The water exposures included contributions to total internal body dose from 3 routes: ingestion, inhalation, and dermal. The researchers note that a Marine in training may consume as much as 6 liters a day of drinking water, but the combined dose from inhalation and dermal routes could be as high or higher than that from ingestion. For example, they note that an internal dose via inhalation to TCE during a 10-minute shower could equal the internal dose via ingestion of 2 liters of contaminated drinking water.
Health risks at Camp Lejeune have been studied before, but this study “more fully establishes the scope,” Richard Clapp, a Boston University emeritus public health professor, told the Associated Press .