Weight-loss results vary from person to person and is not guaranteed after surgery.
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Mr. Sanjay Agrawal
MBBS, MS, FRCSEd, FRCSGlasg, FRCS (Gen. Surg), FASMBS
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How Gastric Bypass Surgery Helps You Lose Weight?

Gastric bypass surgery is one of the most effective bariatric procedures, but it also requires the most extensive surgery. If you are considering a gastric bypass, you should make sure that you understand what the operation involves and how it can help you.

How It Works? 

A gastric bypass works by reducing the size of your stomach and changing the way food moves through your digestive system. After the procedure, food will enter a small stomach pouch then move directly into the lower part of your small intestine, bypassing the rest your stomach and part of the small intestine. This will reduce the amount of food you can eat and make your body less efficient at obtaining calories from the food that you do eat.

Gastric bypass surgery is usually performed laparoscopically, through four or five small incisions. You will need a general anaesthetic. The surgeon will create a small pouch at the top of your stomach and connect it to your lower small intestine. The bypassed section of your stomach and small intestine will also be connected to the lower intestine, to supply the bile and digestive enzymes collected from your liver and pancreas. The operation can take up to three hours and you will need to spend between two and four nights in hospital afterwards. It will usually take two to three weeks to recover from the procedure.

Pros and Cons 

The gastric bypass can be one of the fastest and most effective forms of bariatric surgery, with patients who follow the dietary and lifestyle advice typically losing 60-70% of their excess weight. It helps by restricting the amount you can eat and reducing the amount of calories you absorb. You may also experience an aversion to sweet foods after this surgery due to dumping syndrome, which can be uncomfortable but helps you stick to your diet.

Gastric bypass surgery is a significant procedure carried out under a general anaesthetic, so there are serious risks involved that you need to discuss with your doctor. About 1 in 20 people will experience surgical complications with this procedure, and there is a risk of problems such as hernia in the longer term. You will need to continue having regular check ups for at least two years and although this procedure is reversible, it is usually a permanent change unless there is a serious medical reason to operate again.

The gastric bypass surgery also makes it more difficult to get the nutrition you need from your food. This can help with weight loss, but it also makes it harder to get all the vitamins and minerals you need from your diet. You will need to take a nutritional supplement every day for the rest of your life.

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The contents this site is for information only, and is not meant to substitute the advice of your own physician or other medical professional.
Weight-loss results vary from person to person and is not guaranteed after surgery.