A report by Finnish researchers published in the August 2011 American Journal of Epidemiology states that children of mothers who smoke cigarettes while pregnant are more likely to be prescribed psychiatric and other medications for mental and emotional instabilities.

http://www.nileinternational.net/full_story.php?ID=28417
http://uk.reuters.com/article/2011/08/26/health-us-moms-smoking-idUKTRE77P74F20110826
http://aje.oxfordjournals.org/content/early/2011/08/04/aje.kwr150