Pregnant women who had greater light exposure three hours before sleep were more likely to develop gestational diabetes.
Pregnant women having just one medium glass of wine (175ml) or a 12-ounce beer a week could affect their child's future appearance.
These women are also at a "significantly elevated" risk of needing intensive care and 23 times more likely to develop pneumonia.
High cholesterol in pregnancy raises the risk of cardiovascular disease in offspring by almost 40%, according to a study.
Homicide, especially involving an intimate partner and gun violence, is now the leading cause of death for pregnant women in the United States.
Study authors report taking acetaminophen while expecting may lead to sleep and behavioral issues in children.