Maternal Smoking Causes Changes in Fetal DNA, Study Finds

Posted on March 22, 2012

ScienceDaily (May 18, 2011) — Children whose mothers or grandmothers smoked during pregnancy are at increased risk of asthma in childhood, but the underlying causes of this are not well understood. Now a new study indicates changes in a process called DNA methylation that occurs before birth may be a root cause.

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