Gastroplasty is surgery that reshapes the stomach, usually to reduce its capacity as a treatment for severe obesity. The classic operation staples the upper stomach into a small pouch with a narrow outlet, so modest meals produce fullness — the principle behind vertical banded gastroplasty, once common in bariatric practice. Newer endoscopic techniques, such as endoscopic sleeve gastroplasty, achieve a similar reduction by suturing the stomach from within, without incisions. All forms are restrictive procedures: they limit intake without rerouting the intestine, unlike gastric bypass. Success depends on permanent dietary change — small, protein-adequate meals, thorough chewing, and vitamin supplementation — and long-term follow-up to manage complications and weight regain.