English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/44688
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Title

Hair mercury levels, fish consumption, and cognitive development in preschool children from Granada, Spain

AuthorsFreire, Carmen; Ramos, Rosa; López-Espinosa, María-José; Díez, Sergi; Vioque, Jesús; Ballester, Ferrán; Fernández, Mariana F.
KeywordsHair mercury
Fish consumption
Children
Cognition
Spain
Issue Date2010
PublisherElsevier
CitationEnvironmental Research
AbstractThe main source of human exposure to mercury is the consumption of fish contaminated with methylmercury, which may adversely affect early neurodevelopment. This study assessed mercury levels in hair of preschoolers in Spain, where fish consumption is elevated, with the aim of investigating the influence of their fish intake and other factors on mercury exposure, and evaluating their association with cognitive development. A population-based birth cohort from Granada (Spain) was studied at the age of 4 yr. Total mercury (T-Hg) levels were determined in children's hair, and daily fish intake was assessed by a food frequency questionnaire. The McCarthy Scales of Children's Abilities (MSCA) were used to assess children's motor and cognitive abilities. Complete data were gathered on 72 children, and multivariate analyses were performed to evaluate the influence of mercury exposure and fish intake on MSCA outcomes. Mean concentration of T-Hg in hair was 0.96 μg/g (95% confidence interval=0.76; 1.20 μg/g). T-Hg levels were associated with higher frequency of oily fish consumption, place of residence, maternal age, and passive smoking. After adjustment for fish intake, T-Hg levels ≥1 μg/g were associated with decrements in the general cognitive (−6.6 points), memory (−8.4 points), and verbal (−7.5 points) MSCA scores. Higher mercury exposure in children from this Mediterranean area was associated with cognitive development delay. Studies on the putative benefits of fish intake during early development should consider mercury exposure from different fish species.
DescriptionThe authors are grateful to Richard Davies for editorial assistance. The results would not have been achieved without the selfless collaboration of the study participants and staff at the Pediatrics Department of the San Cecilio University Hospital.
Publisher version (URL)http://dx.doi.org/10.1016/j.envres.2009.10.005
URIhttp://hdl.handle.net/10261/44688
DOI10.1016/j.envres.2009.10.005
ISSN0013-9351
E-ISSN1096-0953
Appears in Collections:(IDAEA) Artículos
Files in This Item:
There are no files associated with this item.
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.