In closing, the authors say that "smoking may also boost the complex interactions between genetic and environmental factors, which contribute to a child's development and behavioral patterns." "Smoking in pregnancy and disruptive behaviour in 3-year-old boys and girls: an analysis of the UK Millennium Cohort Study" J Hutchinson, K E Pickett, J Green, L S Wakschlag Online First J Epidemiol Community Health 2009 doi:10.1136/jech.2009.089334 Journal of Epidemiology and Community Health Written by Stephanie Brunner (B.A.) Copyright: Medical News Today Not to be reproduced without permission of Medical News Today Please rate this article: (Hover over the stars then click to rate) Any medical information published on this website is not intended as a substitute for informed medical advice and you should not take any action before consulting with a health care professional. Full Article at Medical News Today