As frontline clinicians, occupational and environmental health nurses play an important role in educating workers and the public about the dangers and toxic effects of environmental contaminants. One of these contaminants is methylmercury, which enters the body through the consumption of contaminated fish and seafood. Methylmercury affects the central nervous system where it may cause psychiatric disturbances, ataxia, neuropathy, and visual and hearing loss. Because their central nervous systems are rapidly developing, the most vulnerable subgroups are infants in utero, babies, and young children. Pregnant women and nursing mothers can directly expose their infants because methylmercury passes through the placenta to the infant and is also present in breast milk. The purpose of this article is to provide an overview for occupational and environmental health nurses and other health care practitioners about the causes and consequences of methylmercury exposure in women of childbearing age and children so that they can better educate workers about this environmental contaminant.
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http://dx.doi.org/10.1177/2165079916664102 | DOI Listing |
J Hazard Mater
January 2025
State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China; University of Chinese Academy of Sciences, Beijing 100049, China.
Elevated methylmercury (MeHg) exposure poses significant risks to bird health, behavior, and reproduction. Still, the risk of MeHg exposure to forest birds, accounting for over 80 % of the world's bird species, is poorly understood. This study combines Hg isotopes and video analysis, aiming to assess MeHg exposure risks to a forest riverine songbird, the spotted forktail (Enicurus maculatus) from a remote subtropical montane forest.
View Article and Find Full Text PDFJ Trace Elem Med Biol
January 2025
Indiana University, Department of Biochemistry and Molecular Biology, Indianapolis, USA. Electronic address:
Mercury is a pervasive environmental toxin with significant negative effects on human health. In occupational settings, incidents such as the Minamata and Niigata disease in Japan and the large-scale methylmercury poisoning in Iraq have highlighted the severe health impacts of mercury exposure. It is widely accepted that all forms of mercury including methylmercury and mercuric chloride have the potential to induce toxic effects in mammals, and there is increasing concern about the impact of environmentally relevant levels of mercury on reproductive functions.
View Article and Find Full Text PDFSci Total Environ
January 2025
State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, 100012 Beijing, China. Electronic address:
Methylmercury (MeHg) is a neurotoxicant with adverse effects on visual systems from fish to man. Clinical signs of visual deficits including color-vision alterations, visual field constriction and blindness have been frequently identified in patients and affected animals following acute and chronic exposure to MeHg. However, it is still unclear whether MeHg causes developmental defects in the eye.
View Article and Find Full Text PDFJ Immigr Minor Health
January 2025
Department of Epidemiology, Fielding School of Public Health, University of California, Los Angeles, PO Box 951772, Los Angeles, CA, 90095-1772, USA.
Higher concentrations of heavy metals were reported mainly among adult Asian persons compared to other racial/ethnic groups in earlier NHANES cycles' studies. We aimed to examine concentrations of metals among Asian children/adolescents compared to children/adolescents identifying with other racial/ethnic groups, considering socio-demographic factors and potential mediation by fish/shellfish consumption. Using NHANES data (2015-2018), 5293 participants (1-19 years) with blood/urinary measurements of lead, cadmium, mercury and arsenic were included.
View Article and Find Full Text PDFNat Food
January 2025
MOE Laboratory of Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing, China.
The neurotoxin methylmercury in seafood threatens food safety worldwide. China has implemented stringent wastewater policies, established numerous treatment facilities and enforced rigorous water quality standards to address pollution in its waterways. However, the impact of these policies on seafood safety and methylmercury exposure remains unknown.
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