Women who smoke experience all the same health risks as men do: lung and other cancers, coronary heart disease and stroke and severe lung diseases. In addition, they have other serious risks, including risks to their reproductive health. If you smoke while you are pregnant, you are putting yourself and your unborn child at increased risk for complications. Well-known risks of smoking during pregnancy are bleeding complications, prematurity and low birth-weight babies. Many studies have documented a link between smoking during pregnancy and sudden infant death syndrome (SIDS).