A new report shows more than one in ten Irish women smoke all through their pregnancy.
The Growing Up in Ireland study found that women who experienced stress during pregnancy, come from a poor backround and have a low level of education were more likely to smoke.
The research was carried out in 2007 and looked at the experiences of 11 thousand infants and their families
Author of the report, economic sociologist at the ESRI and Trinity College, Richard Layte, says some pregnant women use cigarettes to cope with pressures or worries:
