How does smoking and drinking affect a pregnant woman's baby?

Negatively!: Alcohol can cause many birth defects and mental retardation in developing babies. We don't know how much is safe so it is best avoided entirely. Smoking can cause small babies and increase the rates of miscarriage. It can also cause preterm labor.

Bad bad bad : The consequences of alcohol consumption and smoking for the unborn life are dramatic. There is an urgent need to stop if you are pregnant and doing this or know someone who is. Educate yourself http://www.Nlm.Nih.Gov/medlineplus/pregnancyandsubstanceabuse.Html.