Due to bacterial and viral infection some cases of disturbances of the stomach can take place. It can also be due to food poisoning and overeating. Some disorders are: Jaundice: It is due to the liver. The bile pigments of the liver that are the bilirubin and biliverdin are increased in the blood. These are then visible in skin and eyes and it causes them to turn yellow. Vomiting: This is done when the stomach ejects out the food from the mouth. The medulla is responsible for controlling the reflexes that are associated with vomiting. There is a feeling of nausea that is encountered before vomiting. Diarrhoea: In this more liquidity is present in the fecal discharge and also the frequency of the bowel movements is increased. The absorption of the food is reduced. Constipation: This is because of irregular movements of the bowel and the feces are stuck inside the large intestines. Indigestion: This is because the food is not properly digested and we get a feeling of fullness all the time. It can be due to anxiety, stress, not a proper release of enzymes, overeating, and food poisoning.