Abstract
Extensive environmental health science and toxicological research exists demonstrating that
mercury toxicity is associated with an array of psychological outcomes, such as cognitive,
mental, emotional, and behavioural disturbances. Despite this evidence, there is limited
psychological research and practice on mercury exposure indicating little knowledge on how
mercury toxicity is considered by mental health professionals in South Africa. At the time of
this research no South African studies were found that explored the psychological
implications of mercury toxicity. This study utilised a multi-phased mixed approach,
including a global systematic review and qualitative interviewing. The aim of this research
was to synthesize current knowledge and identify future recommendations on mercury
toxicity and related psychological outcomes to develop a South African research agenda.
Semi-structured interviews were conducted with 10 psychological professionals. Questions
were centred around current perceptions, screening, and research recommendations. Thematic
content analysis was used for both parts to identify themes that emerged. The results revealed
that while a large body of global research considers the psychological implications associated
with mercury toxicity, strong epidemiological research is limited, and health professionals
remain ill-equipped. This is further emphasised among South African psychological
professionals. While participants believe mercury could be a concern, they do not generally
consider or assess for mercury toxicity. The descriptive themes revealed that this may be due
to a lack of awareness, interaction with research, and education and training on mercury. This
study exposed the need for more research and training on mercury toxicity within the
psychological field and provided key areas of focus for future research.
Keywords: Mercury Exposure, Mercury Toxicity, Neurotoxins, Psychological Outcomes,
Psychological Assessment, Neuropsychological Outcomes, Neuropsychological Assessment,
Environmental Health, Environmental Epidemiology.