Understanding Different Bariatric Surgery Procedures: Gastric Sleeve vs. Gastric Bypass

Planning to lose weight with bariatric surgery but confused about which surgical option is good for you? Gastric sleeve or gastric bypass? While both are excellent choices for weight loss, they have major differences between them which makes it better for specific patients. Learn about the differences between gastric sleeve and gastric bypass surgeries in this article. Log on to www.doralhw.org for a consultation about weight loss surgery.



Gastric sleeve vs. gastric bypass

Both surgeries are used for weight loss procedures. However, they differ in how they lead to weight loss and their effects on the digestive system. Both surgeries are used to reduce the size of a person’s stomach and limit the amount of food they can eat.



Both surgeries are done under the influence of local anesthesia.


Gastric sleeve surgery can permanently remove 80% of a person’s stomach and leave only a small banana-shaped pouch that can hold only a cup of food. This surgery also lowers the appetite by lowering the production of ghrelin, the hormone that stimulates hunger. It also limits the number of calories that you can consume by making you feel full faster for a longer time.


On the other hand, gastric bypass surgery also creates a small pouch at the top of the stomach that connects directly to the middle part of the small intestine and then bypasses the rest of the stomach and the first part of the small intestine. This surgery also reduces a person’s appetite by making them feel fuller with less food consumption. It also reduces the absorption of calories and nutrients in the intestines. It is also known as Roux-en-Y gastric bypass surgery.



Both gastric sleeve and gastric bypass are minimally invasive techniques in which small incisions are made on your abdomen. Recent advancements in bariatric surgery also improved recovery times.


These two surgical procedures take similar time for hospital stays (1 to 3 days) and overall recovery times (4 to 6 weeks). Recovery time also depends on your unique situation including presurgical weight, mobility, and any co-occurring conditions.



Both surgeries are very safe and effective for weight loss, however, they also carry certain risks and complications that vary from person to person. Both surgeries can cause hemorrhage, which means excessive bleeding. Other risks of both surgeries cause are:

  • Leakage
  • Dumping syndrome
  • Weight regains
  • Nutritional deficiencies



Both surgeries cause different complications including:

Gastric sleeve surgery complications

  • Gastroesophageal reflux disease (GERD): Some people develop this condition and experience new-onset GERD symptoms after their surgery.
  • Stricture: When your sleeve gets narrowed, this complication occurs, which causes difficulty in swallowing and requires additional interventions.


Gastric bypass surgery complications

  • Marginal ulcers: Ulcers occur when the small intestine connects to the pouch. These ulcers may lead to pain, bleeding, or discomfort.
  • Internal hernia: There’s a risk of developing internal hernias in the small bowel mesentery, which causes bowel obstructions and requires surgery.
  • Gallstones: When rapid weight loss occurs due to gastric bypass, it increases the risk of developing gallstones.


Which is better?

While both surgeries are good for weight loss, they offer certain benefits and risks that make each one good for different patients.

If you want straightforward surgery with fewer complications and you’re okay with slow weight loss with faster recovery time, and non-reversible, then gastric sleeve surgery is a good option for you.

However, if you can handle complex surgery with more complications, quicker weight loss with slow recovery time, and is reversible, then gastric bypass is a good option for you.


Gastric sleeve and gastric bypass surgeries are both good options for weight loss. However, both have different procedures, complications, and recovery times. You can consult with your doctor about their benefits and disadvantages to make the right choice for your weight loss.


If you need help with bariatric surgery, call or visit our bariatric clinic in Brooklyn to get professional medical help. If you want the best surgical options for weight-loss surgery, whether it’s Gastric sleeve surgery, Laparoscopic surgery, Gastric bypass surgery, Sleeve gastrectomy, or LAP band surgery; call us on +13473845690 to get a consultation from us. Doral Health and Wellness has one of the best bariatric doctors and surgeons to treat obesity and weight problems. Book your appointment and walk in at 1797 Pitkin Avenue, Brooklyn, New York 11212. Book your slot for a weight-loss consultation.