jueves, 29 de noviembre de 2012

Smoking in Pregnancy Tied to Poor Reading Skills in Kids: Study: MedlinePlus

Smoking in Pregnancy Tied to Poor Reading Skills in Kids: Study: MedlinePlus


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    Smoking in Pregnancy Tied to Poor Reading Skills in Kids: Study

    Mothers with pack-a-day habits may have children who lag behind classmates
    URL of this page: http://www.nlm.nih.gov/medlineplus/news/fullstory_131697.html (*this news item will not be available after 02/25/2013)
    By Robert Preidt
    Tuesday, November 27, 2012 HealthDay Logo
    HealthDay news image TUESDAY, Nov. 27 (HealthDay News) -- Children whose mothers smoked one or more packs of cigarettes a day during pregnancy have poorer reading skills than other children, a new study finds.
    Researchers analyzed data from more than 5,000 children in the United Kingdom, and compared their scores on a series of tests assessing how accurately a child reads aloud and comprehends what he or she reads. The children were tested at ages 7 and 9.
    On average, children whose mothers smoked at least one pack of cigarettes a day during pregnancy scored 21 percent lower on the tests than children born to nonsmoking mothers, according to the study published this month in the Journal of Pediatrics.
    In a class of 31 students with similar backgrounds and education, a child of a mother who smokes will rank an average of seven places lower in reading accuracy and comprehension ability than a child of a nonsmoking mother, the researchers concluded.
    "It's not a little difference -- it's a big difference in accuracy and comprehension at a critical time when children are being assessed, and are getting a sense of what it means to be successful," study author Dr. Jeffrey Gruen, a professor of pediatrics and genetics at Yale School of Medicine, said in a Yale news release.
    The effects of smoking during pregnancy are especially strong in children with an underlying speech disorder, which suggests an interaction between nicotine exposure in the womb and a highly heritable trait such as speech ability, Gruen added.
    The study found an association between maternal smoking and children's reading skills, but it didn't prove cause-and-effect.
    SOURCE: Yale University, news release, Nov. 19, 2012
    More Health News on:
    Child Development
    Pregnancy and Substance Abuse

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