Adjustable

gastric band surgery increases the secretion of GLP1, which improves glycaemic

control

Sleeve

gastrectomy surgery reduces circulating levels of ghrelin, which is thought to

be a key determinant of improved glucose tolerance

Adjustable

gastric band surgery acutely improves glucose tolerance and insulin sensitivity

without associated weight loss

Sleeve gastrectomy surgery increases the

secretion of GLP1, which increases glucose-stimulate insulin secretion