What surgical procedure reduces the stomach by 75%, leading to significant weight loss?

The surgical procedure that reduces the stomach size by approximately 75% to promote significant weight loss is the gastric sleeve procedure, also known as sleeve gastrectomy. During this operation, the surgeon removes a large portion of the stomach, resulting in a tube-like structure that holds less food. This significant reduction in stomach volume not only limits food intake but also reduces the production of hunger hormones, leading to decreased appetite and helping patients achieve substantial weight loss over time.

The gastric sleeve is particularly effective for patients struggling with obesity, as it focuses on both anatomical and hormonal changes that contribute to weight management. Importantly, while the gastric sleeve procedure does lead to considerable weight loss, it is paired with lifestyle changes, including dietary modifications and exercise, to maximize its benefits.

In contrast, other surgical options like gastric bypass reroute the digestive system, while lap band surgery involves placing a band around the top portion of the stomach to create a smaller pouch. Endoscopic sleeve gastroplasty is a newer, less invasive technique that involves suturing the stomach but doesn't remove stomach tissue like the gastric sleeve does. Each of these procedures has different mechanisms, but the gastric sleeve is distinctive for its substantial reduction of stomach size and effectiveness in weight management.