12/08/2026
A gastric sleeve does more than make the stomach smaller.
During the procedure, a large section of the stomach is permanently removed, leaving a narrow, sleeve-shaped stomach. This means the stomach holds less food, so patients generally feel full after smaller meals.
The operation can also change the signals between the digestive system and the brain. The part of the stomach that is removed produces much of the hormone ghrelin, which helps signal hunger. Lower ghrelin levels and other hormonal changes may help reduce appetite and improve feelings of fullness for many patients.
GLP-1 may also increase after eating. GLP-1 is a natural gut hormone that helps signal fullness, supports blood sugar control and may reduce appetite.
These changes mean a gastric sleeve is about more than simply eating less. The smaller stomach and altered appetite signals can work together to support weight loss, but results and experiences vary between patients.
Because a gastric sleeve is permanent, Aurora also provides 12 months aftercare and follow up support for all our patients.
Considering surgery? Start with an individual medical assessment to understand whether it may be suitable for you.
General information only. Individual suitability, risks and outcomes vary.