 Common results of smoking during pregnancy include pre-term births, low birth weights, fetal and neonatal deaths, respiratory problems, and sudden infant death syndrome (SIDS), as well as increased risk for cognitive impairment, attention deficit hyperactivity disorder (ADHD) and other behavioral problems.Also, in a study published in the International Journal of Cancer, children whose mothers smoked during pregnancy experienced a 22% risk increase for non-Hodgkin lymphoma.Although alcohol use in careful moderation (one to two servings a few days a week) during pregnancy are not generally known to cause fetal alcohol spectrum disorder (FASD), the US Surgeon General advises against the consumption of alcohol at all during pregnancy.