What's the effect of cutting off half of your stomach?

Half stomach resection may lead to reduced food intake, gastroesophageal reflux, dumping syndrome, etc., as follows:

After half stomach resection, most patients will feel full after eating relatively little food due to a significant reduction in stomach volume. Secondly, if the upper half of stomach tissue is removed, some food and acid in the stomach will easily flow back to the esophagus due to the disappearance of the cardia, causing acid reflux, belching and other symptoms. In addition, if the duodenum, pylorus and other stomach are removed at the same time, it may also lead to rapid gastric emptying, so the patient will quickly feel hungry, and even secondary dumping syndrome may occur in severe cases, causing diarrhea symptoms.