Scientists discovered two genes involved in hyperemesis gravidarum, a condition that can cause extreme nausea and vomiting ...

Throwing up yellow bile may be related to severe vomiting caused by the stomach flu, food poisoning, or morning sickness. However, health conditions like bile reflux can also cause the problem.

One principle that might help keep morning sickness at bay is that nausea is often worse on an empty stomach. So eat small, frequent meals throughout the day rather than the traditional breakfast ...

Morning nausea or sickness can be a sign of pregnancy, but there are other possible causes of feeling nauseous in the morning. These include low blood sugar, dehydration, anxiety, and more.

Daniella Gray is a Newsweek Family & Parenting Reporter based in London, U.K. Her focus is on family dynamics, childhood development, parenting styles, U.S. education and current trends in family ...