Why does your aunt throw up?

During menstruation some women will show nausea, vomiting symptoms, the main reasons are the following: first, during menstruation, hormone levels in the body show changes, will affect the normal gastrointestinal motility, so may show gastrointestinal dysfunction, nausea, vomiting, diarrhea and other symptoms, is a normal physiological reaction. At the same time, prostaglandin secretion in the body will cause muscle contraction, but also affect the contraction of the stomach, so it will show nausea, vomiting, diarrhea and other performance.Second, consider the stomach cold during menstruation or improper diet and other reasons, if the stomach cold or often eat cold, irritating food, will directly stimulate the stomach, so affect the normal gastric peristalsis, will also show nausea, vomiting and other performance. Third, it may also be caused by other factors, such as mental factors or external environmental factors.