Gastric bypass vs sleeve vs band: What’s the difference?

Gastric bypass vs sleeve vs band

Although the purpose of all three weight loss surgeries we offer is to reduce appetite and portion size to ultimately help with weight loss, there are some key differences between these procedures. Below, we explain what you can expect from a gastric sleeve compared to a gastric bypass or band.

What’s the difference?

Gastric sleeve

The gastric sleeve procedure is normally done as keyhole surgery and involves vertical removal of most of your stomach, which helps to control food intake. The gastric sleeve surgery is irreversible. A laparoscopic sleeve gastrectomy is sometimes recommended over other forms of bariatric surgery if a medical condition would rule them out.

Gastric bypass

A gastric bypass is where the top of the stomach is stapled to create a small pouch which is then connected to the small intestine. Because the pouch is smaller, and the rest of the stomach is bypassed, you will feel full after eating less. Hormones that stimulate satisfaction increase, and hormones that stimulate hunger decrease.

Gastric band

So, what about a gastric band versus gastric sleeve or bypass? One of the main differences is that a gastric band is less invasive than gastric sleeve or gastric bypass surgery. A band is placed around the top of the stomach, which stimulates nerve endings and tricks the brain into thinking the stomach is full. This helps you to feel satisfied on smaller portions. This involves follow up appointments to fill your band and keep the restriction as your band loosens around your shrinking stomach.

Which option is best for me?

If you’re wondering whether a gastric sleeve compared to a gastric bypass or band is best for you, we advise booking a free consultation with one of our surgeon assistants to discuss your weight loss surgery options. They will be able to explain the pros and cons of bariatric surgery and help you find the best procedure for you and your body.

Weight loss surgery frequently asked questions


How does a gastric sleeve work?
During total gastrectomy, the upper part of the stomach is removed, reducing the capacity of the stomach by around 75%, along with the area where ghrelin (the chemical that stimulates appetite) is produced. Your portion size and appetite are therefore reduced.
Is a gastric sleeve reversible?
No.
How does a gastric bypass work?
Both gastric sleeve and gastric bypass surgeries reduce the capacity of your stomach, but a bypass is more invasive than gastric sleeve surgery. During a bypass, the top of the stomach is stapled, creating a small pouch that is then connected to your small intestine. Because the pouch is smaller and the rest of your stomach is bypassed, you will feel full after eating less, meaning your overall appetite will reduce and you may absorb fewer calories from your food.
Is a gastric bypass reversible?
No.
How does a gastric band work?
A band is placed around the top of the stomach, which stimulates nerve endings, tricking your brain into thinking the stomach is full. You will feel more satisfied on smaller portions of food as a result. As the band loosens around the top of your stomach you will need to attend the clinic for follow up appointments to fill your band with small amounts of saline, to tighten the band and maintain restriction. This is accessed via a port which sits just under your skin.
Is a gastric band reversible?
Yes.

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