The report finds that, even with today's scientific advances, the complex nature of the Camp Lejeune contamination and the limited data on the concentrations in water supplies allowed for only crude estimates of exposure. The report concludes that strong scientific evidence is not available to link the health problems among those exposed to the contaminants. The report also concludes that further research cannot provide definitive information, so policy changes or administrative actions to address and resolve concerns should not wait until additional health studies are conducted.

In addition to reviewing information specific to Camp Lejeune, the report reviews available epidemiologic and toxicologic studies on associations between these chemicals and adverse health effects. The review shows insufficient evidence to justify a causal inference for any health effects. However, the committee found "limited or suggestive evidence of an association" between chronic exposure to TCE, PCE, or a mixture of solvents and some diseases and disorders, including cancers of the breast, bladder, kidneys, esophagus, and lungs. The majority of the health outcomes reviewed in the epidemiologic studies was placed in the category of "inadequate or insufficient evidence."
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