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would like to know more about weight loss surgery ...

Gastric Bypass (Roux-en-Y)

This procedure is the most popular of all the weight loss surgeries, particularly in the United States where it makes up for approximately 80% of weight loss surgeries.  Of all of the surgeries it is a procedure that often sees the most effective weight gains in patients and for this reason is very popular.  In some cases 70% of weight can be lost in the first twelve months.  Success is however down to you alone and you will need to stick to a strict aftercare plan to achieve dramatic results. The procedure does involve the bypassing of the small intestine and will mean that you will need to take nutritional supplements and vitamins post surgery for the rest of your life. The gastric bypass is not the simplest of weight loss surgeries and requires a great deal of skill from the surgeon.  It works by using both restrictive and malabsorptive methods by both reducing the amount of food that the stomach can hold and by restricting the absorption of food. 

The procedures involves making the stomach smaller and bypassing some of the small intestines.  The stomach is divided into two compartments and therefore is made much smaller. The smaller division of the stomach is called the pouch and is roughly the size of an egg, which can hold around 1-2 ounces of food.  A normal stomach is about the size of a football.  The stomach is divided by using a stapler, which is why a gastric bypass is something’s referred to as ‘stomach stapling’.  The term ‘stomach stapling became popular in the media, but this term does not accurately describe gastric bypass surgery as the procedure is more complex than just a simple ‘stapling.  The small intestines are divided in two at a certain length.  When the small intestines are divided of the two cut ends, the intestine that is further away is moved into the new stomach pouch.  The other end of the small intestine is plugged back into the small intestine to complete the circuit.  Surgery can take up to four hours to complete and requires most patients to be in hospital for two to four days approximately.  The surgery is performed under a general anaesthetic.

Many patients who are undergoing this surgery ask how much of the small intestine is bypassed.  It is only a small amount of the small intestine that is bypassed (approximately 100 cm or less).  The larger the amount of small intestine that is bypassed generally the greater the weight loss. 

When you have a gastric bypass you must chew your food slowly and fully.  When the food mixes with your saliva it goes down the esophagus into your new pouch and then into the small intestine.  The bile and other enzymes don’t join the food in the normal way until much further down the small intestine so there is less time for calorie absorption.

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