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

Vomiting represents one of the body’s most powerful defensive mechanisms – a forceful ejection of stomach contents designed to rid the system of potential toxins. This protective response commonly ...

While nausea and a watery mouth are usually not a cause for concern, they may be a sign of an underlying condition. They can also be a precursor to vomiting. A watery mouth is also known as ...