Vomiting Every Time After Drinking? Practical Tips to Overcome Hangover Nausea

The observations recorded in the Donguibogam align closely with modern physiological findings. The concept of heat binding in the stomach reflects the mucosal inflammation, tissue irritation, and autonomic disturbance caused by excessive alcohol intake. When ethanol enters the digestive system, it is rapidly absorbed through the stomach and small intestine and transported to the liver. The liver breaks ethanol down into acetaldehyde, a toxic metabolite, before converting it into harmless acetic acid. Acetaldehyde directly irritates the gastrointestinal mucosa, prompting inflammation and stimulating gastric acid secretion. The heat described in traditional texts corresponds to this inflammatory reaction and the irritation brought on by gastric hyperacidity. Heartburn and sour regurgitation are direct outcomes of mucosal irritation from acetaldehyde. Alcohol also acts on the vomiting center in the brain's hypothalamus. The brain initiates vomiting to expel harmful substances, and alcohol alongside acetaldehyde hyperactivates this pathway. Furthermore, alcohol disrupts the autonomic nervous system governing gastrointestinal motility, leading to irregular gastrointestinal peristalsis. In particular, abnormal antiperistalsis in the duodenum and jejunum forces stomach contents upward into the esophagus, producing emesis. This reflects the traditional description of heat binding in the stomach and expelling its contents. Alcohol also triggers systemic dehydration, which causes electrolyte imbalance and weakens the protective intestinal barrier of the gastrointestinal mucosa, aggravating nausea. Concurrently, headaches emerge as alcohol dilates cerebral blood vessels, causes dehydration, and prompts an inflammatory response via acetaldehyde. Hangover vomiting is therefore not an isolated event, but the product of complex alcohol toxicity and stress responses spanning the digestive system, nervous system, and endocrine system, serving as an important warning sign from the body.