Nausea is an uneasiness of the stomach that can happen before and after vomiting. It is the force of emptying the stomach's contents back through the mouth. The cause of nausea could be motion sickness, signs of pregnancy, food poisoning, gallbladder disease or it is caused by emotional distress. According to WebMD, the timing of vomiting may be an indicator of the cause after we eat. This can be from food poisoning or from having an ulcer. Nausea is pretty complex and is influenced by the messages sent to the brain to signal that something is wrong. The "vomiting center includes an area called the chemoreceptor trigger zone, which is part of the medulla oblongata and receives messages to initiate vomiting," Dr. Josh Axe wrote. While many people run to medication to find relief, there are natural ways to ease the discomfort of nausea. Here are 6 foods that will help.