23 August 2008

There are several operations for weight loss to choose from and obese people who are suitable for surgery should discuss the risks and benefits of each with a health professional.

Some weight loss operations reduce the size of the stomach so that only small amounts of food can be eaten; others bypass part of the small intestine so that the body absorbs fewer calories from food; and others combine the two.

Malabsorptive Weight Loss Surgery
Commonly referred to as or metabolic surgeries, these procedures partially bypass the small intestine, limiting the body’s ability to absorb nutrients. The unprocessed food passes through the body as feces while the decrease in calories causes weight loss.

1. Biliopancreatic Diversion Surgery.
This operation removes most of the stomach and attaches a small pouch left to the final part of the small intestine.
2. Gastric Bypass
A line of staples separates the top part of the stomach to create a pouch which means food bypasses most of the stomach and small intestine.
3. Duodenal Switch
A similar operation to the biliopancreatic diversion, this operation involves removing part of the stomach.

Restrictive Weight Loss Surgery
These procedures work by making you feel full with far less food. Since you feel full more quickly, your total intake of calories is lower, resulting in weight loss.
1. Banded Gastroplasty Surgery
A band fitted around the top of the stomach which severely restricts the amount of food you can eat.
2. Vertical Sleeve Gastrectomy Surgery
An operation for weight loss which reduces the size of the stomach.

Mixed Weight Loss Surgery
These procedures combine elements of malabsorptive and restrictive procedures to make you feel full more quickly and reduce the number of calories your body is able to utilize from the food you eat.
1. Roux-en-Y (Gastric Bypass) Surgery

2. Biliopancreatic Diversion with Duodenal Switch (BPDDS) Also known as vertical sleeve gastrectomy with duodenal switch (VSGDS).

Others
1. Intragastric Balloon
A deflated silicone balloon is placed into the stomach and filled with liquid to create a feeling of fullness.
2. Implantable Gastric Stimulator
This operation involves implanting electrodes into the stomach which stimulates the stomach to send messages to the brain to induce feelings of fullness.

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