The British Medical Journal in 2009 published a study regarding pregnancy and smoking.
The research reveals that: Mothers who were previous smokers but quit before the 4th month of pregnancy decrease the risk of preterm labor and low birth weight babies to almost the same levels as if they never smoked at all.
Women who continue smoking beyond 15 weeks are 3 times at risk of premature labor and have 2 times the chance of giving birth to small babies says Dr Lesley McCowan from the University of Auckland.
It is a known fact that mothers who smoke while pregnant increase the chance of miscarriage, ectopic pregnancy, premature birth, small babies, stillbirth and neonatal death, say the authors.
This study is not telling smoking mothers to wait till the 15th week to quit. In a perfect world, women who are sexually active and have an opportunity to get pregnant anytime should not smoke at all.
You may view the full article at:
BMJ-British Medical Journal (2009, March 31). Pregnant Women Who Smoke Urged To Give Up Before 15-week ‘Deadline’. ScienceDaily.