Bariatric Surgery refers to surgical procedures that aid in weight loss by modifying the digestive system. The term “bariatric surgery” can refer to a number of procedures, including gastric bypass and other weight loss surgeries.

Types of Bariatric Surgery

It works in a variety of ways, including limiting the amount of food a stomach can hold, decreasing the body’s ability to absorb nutrients, or a combination of the two. Gastric bypass, sleeve gastrectomy, adjustable gastric band, and duodenal switch are the most common types of bariatric surgery.

Gastric bypass: One of the most common types of bariatric surgery is gastric bypass surgery. Simply put, the procedure is divided into two parts. To begin, a small pouch is formed in the upper portion of the stomach, separating it from the rest of the stomach.


Sleeve gastrectomy: This procedure involves removing approximately 80% of the stomach. What’s left is a tube-shaped pouch, also known as a sleeve. Because the stomach is smaller, it can no longer hold as much food. It also reduces the production of the appetite-regulating hormone ghrelin.

Gastric band: The adjustable gastric band procedure involves wrapping an inflatable band around the top of the stomach, creating a smaller pouch above. Less food can be stored, and patients feel fuller faster. With repeated adjustments, the band shrinks in size over time.

Duodenal switch: The Biliopancreatic Diversion with Duodenal Switch (BPD/DS) is also divided into two parts. To begin, a portion of the stomach is excised to form a tube-shaped pouch (similar to sleeve gastrectomy). It also reduces nutrient absorption.

Why is B. Surgery done?

Bariatric surgery is used to help severely overweight patients lose excess weight in order to reduce the risk of serious, life-threatening health problems such as:

  • Heart disease
  • Stroke
  • High Blood Pressure
  • Nonalcoholic fatty liver disease
  • Sleep Apnea
  • Type 2 Diabetes