A new study has linked exposure to lead in early childhood with an increased risk for sleep problems and excessive daytime sleepiness in early childhood.

The new study from the University of Pennsylvania School of Nursing is based on data from a longitudinal, cohort study that began in 2004 involving more than 1,400 Chinese children to investigate how lead exposure influences children’s neurocognitive, behavioral, and physical health development.

Lead pollution is pervasive throughout China and other developing countries, said the researchers, who noted that while rates of lead exposure are decreasing due to the phase-out of leaded gasoline and increased public awareness, its persistence presents a significant health risk to children.

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