Alcoholic ketoacidosis is a complication of alcohol use and starvation that causes excess acid in the bloodstream, resulting in vomiting and abdominal pain.
People who go on a major alcohol binge often vomit repeatedly and stop eating. If the vomiting and starvation go on for a day or more, the liver's normal stores of sugar (glucose) decrease. The low glucose stores combined with lack of food intake cause low blood glucose levels. The low blood glucose levels decrease insulin secretion. Without insulin, most cells cannot get energy from the glucose that is in the blood. Cells still need energy to survive, so they switch to a back-up mechanism to obtain energy. Fat cells begin breaking down, producing compounds called ketones. Ketones provide some energy to cells but also make the blood too acidic (ketoacidosis). This ketoacidosis is similar to the ketoacidosis that occurs in diabetes except that, unlike in diabetic ketoacidosis, blood glucose levels are low.