06/13/2008 05:12 am ET Updated May 25, 2011

Pregnant Mothers' Cell Phone Use Can Harm Babies

Women who use mobile phones when pregnant are more likely to give birth to children with behavioral problems, according to a study of more than 13,000 children.

Pregnant women using the handsets just two or three times a day was enough to raise the risk of their babies developing hyperactivity and difficulties with conduct, emotions and relationships by the time they reached school age.