Until about five years ago, scientists believed the pregnancy hormone, human chorionic gonadotropin (hCG), was the culprit.

Severe sickness during pregnancy can be life-threatening for both mother and child, but women are often told it is all "in their heads," said geneticist Marlena Fejzo, who is on a mission to dispel ...

Morning sickness can start as early as the fifth week of pregnancy. Most people see an improvement in symptoms by the end of the first trimester. Feeling sick during pregnancy is common and usually ...

Many pregnant people struggle with nausea and vomiting, especially during the first trimester. The name "morning sickness" makes it sound like a minor inconvenience that goes away with time (and maybe ...

Roughly 70 percent of pregnant people experience morning sickness: bouts of nausea or vomiting, or both, that put them off their food and send them running for the toilet. Despite its name, the ...

Morning sickness is bouts of nausea and vomiting that typically occurs in the morning. It comes suddenly making it hard for you to stomach anything, even your favorite meals. This is caused by the ...