Lead exposure impacts children's sleep

http://www.eurekalert.org/pub_releases/2015-11/uops-lei111215.php

Public Release: 12-Nov-2015
Lead exposure impacts children's sleep
Novel finding from Penn Nursing research shows that lead exposure in early childhood increase risk for sleep problems and excessive daytime sleepiness
University of Pennsylvania School of Nursing

A new research study from the University of Pennsylvania School of Nursing (Penn Nursing) shows that lead exposure in early childhood are associated with increased risk for sleep problems and excessive daytime sleepiness in later childhood. This is the first longitudinal, population-based study that investigated early lead exposure to sleep problems. The findings are set for publication in the December issue of SLEEP, but can now be found online here.

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The sleep problems reported by the adolescents in the study include excessive daytime sleepiness, insomnia, early morning awakening, trouble initiating and maintaining sleep, and having to use sleeping pills, all of which highlight poor sleep quality.

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Child-reported insomnia and use of sleeping pills were two times and three times more prevalent in children with blood lead levels (BLL) greater than or equal to 10 ug/dL than in children with BLL less than 10 ug/dL. This suggests that sleep disturbances appeared problematic enough for children to suffer from insomnia and even to use sleeping aids/pills in an attempt to ameliorate their symptoms.

"Insufficient sleep and daytime sleepiness is very prevalent in children and adolescents, and it is a pervasive problem that is linked with a significant public health burden," explained Liu. "More research needs to be done to identify contributing factors and ways to prevent or reduce their impact. Doing this can not only help alleviate sleep disturbance, but can also indirectly improve sleep-related health outcomes, including cognition, emotion, behavior, and in some cases, diabetes."