Prenatal tobacco exposure tied to irritability, impulsivity

11/11/2009 | Medscape (free registration)

Children exposed to tobacco before birth showed attention problems and irritability in the first year of life and impulsivity as preschoolers, a Canadian study showed. Researchers said children with prenatal tobacco exposure at age 3 had trouble waiting for an award, which correlates with findings that smoking during pregnancy affects parts of the brain that regulate behavior.

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