Publications by authors named "G D Villanger"
Background: Blood total mercury concentration (BTHg) predominantly contains methyl Hg from seafood, and less inorganic Hg. Measured BTHg is often available only in a small proportion of large cohort study samples. Associations between estimated dietary intake of total Hg (THg) and lower birth weight within strata of maternal seafood intake was previously reported in the Norwegian Mother, Father, and Child Cohort Study (MoBa).
View Article and Find Full Text PDFIntroduction: Cerebral palsy (CP) is the most common motor disability in childhood, but its causes are only partly known. Early-life exposure to toxic metals and inadequate or excess amounts of essential elements can adversely affect brain and nervous system development. However, little is still known about these as perinatal risk factors for CP.
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- - The study examines prenatal exposure to organophosphate esters (OPEs), chemicals found in items like flame retardants and plasticizers, and their potential effects on preschoolers' executive function (EF).
- - Researchers analyzed data from 340 preschoolers, measuring OPE levels in maternal urine and assessing children's EF through various tests, noting that higher levels of certain OPEs, particularly di-n-butyl-phosphate (DnBP), linked to poorer EF scores, especially in boys.
- - Results suggest prenatal OPE exposure could negatively impact preschoolers' EF, with some differences observed between boys and girls, highlighting the need for further research on chemical exposure effects on child development.
Legacy persistent organic pollutants (POPs) such as polychlorinated biphenyls (PCBs) are chemicals that undergo long-range transport to the Arctic. These chemicals possess endocrine disruptive properties raising concerns for development and reproduction. Here, we report the relationship between concentrations of testosterone (T) and persistent organic pollutant (POPs) in 40 East Greenland male polar bears () sampled during January to September 1999-2001.
View Article and Find Full Text PDFBackground: Prenatal exposure to phthalates, organophosphate esters, and organophosphorous pesticides have been associated with neurodevelopmental deficits including language ability, however, few studies consider the effect of exposure mixtures and the potential longitudinal detriments over time.
Objective: This study examines the influence of prenatal exposure to phthalates, organophosphate esters, and organophosphorous pesticides, on children's language ability from toddlerhood to the preschool period.
Methods: This study includes 299 mother-child dyads from Norway in the Norwegian Mother, Father and Child Cohort Study (MoBa).