What ethics-related discussion is present in journal articles on brain damage due to water contamination by methylmercury? As a neurotoxin, increased bioavailability of methylmercury driven by human activities can have a significant adverse impact on future generations. We categorized ethics-related content according to a framework for Environmental Neuroethics (Cabrera et al., 2016). The framework provides a systematic way of examining phenomena at the intersection of ethics, brain, and environmental change. Measures of the relative quantity of ethics-related content and sources of academic discourse were also made. The most extensive ethical discussion concerned implications for social policy and regulation. We also noted a lack of ethics-related content with regard to cross-cultural perspectives.