Improved Mini Bypass in Tijuana, Mexico

The mini gastric bypass, known medically as the one-anastomosis surgery, is a modification of the RNY gastric bypass. It is also called the omega loop because it makes a loop when bypassing the intestines. In 1997, a doctor named Dr. Rutledge from the United States began performing this operation, and just ten years ago, they were approved at Mexico Bariatric Center®.

As a metabolic surgery, up to 90-95% of bypass patients who take medication to control their obesity-related health issue, like insulin, do not need to take more them long-term post-operatively.

Mini-gastric bypass surgery is proven highly effective in limiting food intake, reducing caloric intake, and altering fat and sugar absorption. Results typically include rapid weight loss as well as noticeable relief from obesity-related health problems like sleep apnea, type II diabetes, hypertension, asthma, and high blood pressure.

Mini Gastric Bypass Surgery in Mexico

Surgery Duration
1.5 – 2 Hours

Hotel Stay
1 Night Pre-Op

Hospital Stay
3 Nights

Back to Work
2 – 3 Weeks

How Mini Bypass Surgery Works

Mini Gastric Bypass Patient Testimonial - Marissa Transformation mgb

“Mini bypass with Mexico Bariatric Center on 2/2/18. HW- 287. GW- 175. CW- 158. 5’7″ from a size 24 to a 4!”


Mini Gastric Bypass

Mini Gastric Bypass Weight Loss Timeline

The mini gastric bypass procedure has become a popular procedure among bariatric surgeons and patients. Not only does it have strong results in the first few months equal to most RNY gastric bypass patients but it has proven to have positive, long-lasting results.

After two years, many of our MGB patients have achieved 85% excess weight loss (EWL). Between the 3rd and 5th year, it is typical for the EWL to level out around 70%-78%. In 14% of patients, there was a failure to lose less than 50% of excess weight within 5 years.

  • 3 months post-op: 35%-37% excess weight loss*
  • 6 months post-op: 55%-60% excess weight loss*
  • 12 months post-op: 73% excess weight loss*
  • 18 months post-op: 78% excess weight loss*

Why Choose Mexico Bariatric Center for Duodenal Switch Surgery

Why Choose Mexico Bariatric Center?

Starting at $6,195 $5,795*

Mexico Bariatric Center is located just across the border in Tijuana, Mexico. MBC strives to offer the most affordable, quality, and reliable all-inclusive packages to medical tourists around the world.

Mini Gastric Bypass All-Inclusive Package

The cost of mini gastric bypass surgery in the U.S. and Canada without insurance can be a significant financial burden, often ranging from $16,000 to $18,000. Thankfully, we provide top-notch weight loss surgery in Mexico, equal to U.S. standards, but at a much lower price. We handle all the arrangements, from your arrival in San Diego until your departure. Our all-inclusive package covers everything – ground transportation, hotel accommodations, and all other essentials. Experience seamless weight loss surgery with our mini gastric bypass Mexico package starting at just $5,795*.

  • Private Ground Transportation
  • Accredited Hospital with ICU
  • Board Certified Surgeons
  • 24/7 Hospital Staff
  • Hospital Stay & Fees (3 nights)

  • Nutrition Program
  • Online Support Group

  • U.S. Surgeon Liaison

  • No Hidden Fees

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Mini Gastric Bypass Before and After Photos

Sarah Beers Before
Sarah Beers After
Kayla P Before
Kayla P After
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Carlos C After
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Kelly C After Mini Gastric Bypass_Mexico Bariatric Center
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Katarina before mini gastric bypass
Katarina after mini gastric bypass
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Paige after mini gastric bypass
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Jake mini after
Renee mini RNY before
Renee mini after
Andi Before
Andi After
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Andrea mini after
Marissa Before
Marissa After
Linsey Before - Mini Bypass
Lindsey After - Mini Bypass

Do I Qualify for Mini Gastric Bypass?

The Mini Gastric Bypass (MGB) is a powerful weight loss procedure that is similar to the gastric bypass. This weight loss surgery is quickly growing in popularity, as being one of the safest and most effective forms of bariatric surgery. To qualify for mini bypass in Mexico, you must have a body mass index (BMI) of 30+.

Use our BMI calculator to instantly determine if you’re a candidate for mini gastric bypass surgery in Mexico. Our general requirements for procedures:

  • BMI of 35+

  • Ages between 16 and 65 (case by case basis)
  • Realistic expectations regarding the weight loss results

Calculate Your BMI

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  • Tanya Mini Gastric Bypass Surgery Before and After
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  • Hannah Mini Gastric Bypass Surgery Before and After
  • Mariessa before and after mini gastric bypass in mexico
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  • Kaylee-Mini-Gastric-Bypass-Surgery-Before-and-After

Is Mini Gastric Bypass Safe?

As a perfect combination of two popular surgeries, the mini gastric bypass only reroutes a single anastomosis (connection) of the small intestine instead of the standard double anastomosis found in gastric bypass and duodenal switch.

In the RNY we need to make another connection between the same small bowel but it is for the bile duct. Instead of having two potential areas of a leak or bleeding, the mini bypass just has one. This makes it safer, reduces operating time, and lowers complication rates than standard bypass surgery.

One of the major concerns of medical patients traveling to Mexico for weight loss surgery is the surgeon’s qualifications. Mexico Bariatric Center works with exclusive surgeons who perform a maximum of 3-4 surgeries per day for the safety of patients. The surgeon’s experience and skills contribute to high patient outcomes.

Mexico Bariatric Center uses full-service hospital facilities with ICU specialized in bariatrics. That is why the MBC complication rate is way below the United States and Canada.

Pros and Cons of Mini Gastric Bypass Surgery

A study provided by the Department of Surgery at the Heart of Florida Regional Medical Center followed a group of mini gastric bypass patients starting with an average BMI of 46. In 91 percent of patients, diabetes had resolved itself within one year. Experts came to the conclusion that GERD is improved by MGB and fewer ulcers occurred compared to those after RYGB.

Mexico Bariatric Center® can help save you thousands of dollars on all-inclusive packages for mini gastric bypass surgery in Tijuana, Mexico.

Advantages of Mini Gastric Bypass Surgery

  • Safe, highly recommended surgery
  • Faster recovery time compared to gastric bypass and duodenal switch
  • High success rate and significant weight loss
  • Strongly requested by past patients
  • One of the most effective surgeries to revise and rescue previous bariatric procedures
  • Useful in resolving Gastro-Esophageal Reflux Disease or GERD
  • Health Advantages can improve asthma/breathing Issues, Type II Diabetes, Sleep Apnea, Arthritis, Headaches and Migraines, High Cholesterol and Blood Pressure, Infertility and PCOS Syndrome, Gastro-Esophageal Reflux Disease or GERD, Cardiovascular Disease, Back Pain and Joint Pain

Disadvantages of Mini Gastric Bypass Surgery

  • Minor Side Effects: Gas Pain, Bruising, Nausea, and Inflammation, short-term hair loss
  • Severe Side Effects: GERD/Gastritis, Bile Reflux, Pneumonia, Blood Clots, and Gallstones
  • Possible short-term complications: Bleeding and Leak (rate of 1.06%[4])

  • Possible near-term complications: Stomach Obstruction, Stricture, or Abdominal Abscess

  • Possible long-term complications: Delayed Leak

Surgical Steps of the Premium Mini Gastric Bypass

There are two components created by this laparoscopic operation. The first is that the gastric pouch has less curvature and is thereby more restrictive. The second is a jejunal bypass that is 200 cm or longer and features a single anti-colic gastrojejunostomy anastomosis, leading to a significant reduction in fat absorption. The surgeon inserts an endoscopic cutter/stapler through the trocars to split the stomach into two sections. The smaller section becomes your “new stomach.” It stays connected to your esophagus and the surgeon reshapes it into a narrow tube, similar to the shape of vertical sleeve gastrectomy. The new mini bypass stomach will hold between four to six ounces of food, compared to the old stomach holding 40 ounces of food.

The lesser curvature is defined where the body and the antrum meet and the stapler division is created at a right angle from this lesser curvature, and then upwards parallel to it. The surgeon divides the stomach laterally toward the gastroesophageal junction. Unlike when it comes to the sleeve gastrectomy operation, cardio is avoided explicitly. The larger section of the stomach that was split from your “new stomach” remains intact and alive within your body. It becomes important to produce digestive fluid which will help the digestion process, although will not hold food again.

This digestive fluid travels through the small intestine, connecting to the point at which food is digested through the “new stomach”, therefore breaking down the food as it continues through the intestine. Then, the bariatric surgeon will examine the length of your small intestine, to measure the amount that will be bypassed. This section of the small intestine will include both the duodenum and a section of the jejunum. It generally is bypassed 5-6 feet from the point at which the larger stomach, or “old stomach”, connects to the small intestine.

When creating the 200 cm long malabsorptive jejunal bypass, the surgeon turns their attention to the left gutter, retracting the omentum medially so that they may identify the Treitz ligament. They run the bowel 200 cm distal to this ligament, at which point the gastric sleeve’s distal tip is anastomosed anti-colic to the jejunum end side. Your surgeon will determine the length that is bypassed based on lifestyle, habits, health, and physical condition. Finally, the surgeon begins the connection between the “new mini stomach” to the small intestine that is bypassed, using a stapler. This connection point is called an anastomosis. Once finished, the mini gastric bypass surgeon will reinforce and stabilize the anastomosis with sutures, finishing the procedure with sutures on the trocar insertion parts of your abdomen.

Anesthisia Icon

1. Anesthesia Administered

General anesthesia is administered by the anesthesiologist and a breathing tube (endotracheal tube) is inserted into the esophagus.

Laparoscopic Incisions Minimal Invasive Icon

2. Cut 3-5 Laparoscopic Incisions

Surgeon makes 3 to 5 laparoscopic incisions in the abdomen and trocars (hollow steel tubes) are placed through as a passageway for surgical instruments.

Trocars Gastric Sleeve Icon

3. Abdomen Filled and Liver Lifted

The abdomen is filled with CO2 to separate stomach wall from the small intestine. The liver is gently pushed aside with a retractor by the assistant surgeon.

Reinforced Gastric Sleeve Staple Suture Icon

4. Divide Stomach to Form Pouch

Insert cutter/stapler as well as other instruments through the trocars. Split the stomach into two sections laterally toward the gastroesophageal junction. The smaller section becomes your “new stomach.”

Mini Gastric Bypass Icon Loop Intestine

5. Loop Bypass Small Bowel

Measure small intestines to become a bypass point (200 cm or longer). The bypassed section of the small intestines connects to the new stomach. This connection point is called an “anastomosis.”

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6. Reinforce & Insert Drain

The anastomosis staple-line is reinforced with brand-name sutures, Johnson & Johnson or Covidien to control bleeding, stomach leakage, and stretching. A drain is inserted as a precaution for the early detection of a leak until the patient is released.

How Does Mini Gastric Bypass Compare?

Comparison to Gastric Sleeve – The one-anastomosis gastric bypass (OAGB) reduces the stomach size significantly while bypassing a large part of the small intestines. The gastric sleeve procedure, however,  completely removes 80% of the stomach, instead of keeping it in-place like the mini gastric bypass.

Comparison to Gastric Bypass – Gastric Mini Bypass is a modified version of Gastric Bypass working in similar ways. The Roux-en-Y Gastric Bypass (RYGB) has two anastomoses, while the mini gastric bypass only has one. The “new stomach” in mini-bypass is created along the lesser curvature of the patient’s stomach. The mini-gastric bypass is also less likely to stretch. The mini-gastric bypass has higher rates of marginal ulceration (MU) as ulcers may occur after this operation.

A surgeon from Taiwan, Wei-Jei Lee, made a comparison between RYGB and the MGB after performing over ten years of the surgeries. He believed that MGB was safer and simpler and that it produced better results when it came to diabetes reduction, GLP-1 elevation, and long-term weight loss.

Is Mini RNY Surgery Dangerous?

Andi-Mini-Gastric-Bypass-Surgery-Before-and-After-720x720There are two components created by this laparoscopic operation with minimal scarring.

  • The gastric pouch in the shape of a tube is created to cause restriction. The new mini bypass stomach will hold between four to six ounces of food, compared to the old stomach holding 40 ounces of food. The larger section of the stomach that was split from your “new stomach” remains intact to produce digestive fluid.
  • A jejunal bypass that features a single gastrojejunostomy anastomosis is performed. The rerouting leads to a significant reduction in nutrition and fat absorption.

The number of OAGB procedures performed has increased dramatically worldwide since it was conceived in the United States 18 years ago by a well-known doctor named Robert Rutledge. In the early stages of the mini gastric bypass surgery, there was a lot of resistance from surgeons who had been performing longer procedures with greater difficulty. The surgeons are finding that this procedure is technically straightforward, rapid, efficient, and safe. There has been a 0.2% 30-day mortality rate.

Even though MGB has been recognized as a simple procedure, the operation can lead to severe complications in the hands of doctors with insufficient understanding of the underlying anatomy and physiology.

The process also offers a single anti-colic anastomosis that, in the prevailing view, results in less leakage. The absence of any leaking issues and a bypassed length that can be modified based on the BMI of the patient. This procedure results in durable weight loss that can be reversed or revised as needed.

Digestion Process Changes in MGB

The Normal Digestion Process – In the typical process of digestion, food begins in your mouth, goes down through the esophagus, then reaches your stomach. As the food gathers in your stomach, it combines with acids and enzymes that aid in digestion. The gallbladder (holds bile produced by the liver) and the pancreas also create and release digestive juices to help aid in digestion, which connects to the small intestines through the pylorus.

As food breaks down, the particles get released into the first part of the small intestine (duodenum) and continue to the second part of the small intestine (jejunum). Almost all the calories, nutrients, and important enzymes are absorbed within the duodenum and jejunum while most of the leftover particles go through the digestive tract and get wasted.

The New Digestion Process – After the mini gastric bypass surgery, the new stomach will hold significantly less food which creates the feeling of being full. Next, as the food exits the new stomach, it reroutes so it does not go through the duodenum and avoids most of the jejunum. Because of this, fewer calories and nutrients are absorbed, while also having most of the same digestive fluid break down the food particles.

Technique Modification

MGB is a modification of the original Billroth II procedure. The surgeon will determine the length that is bypassed based on lifestyle, habits, health, and physical condition. In people who are very tall or especially obese, the surgeon may opt for 250 cm or more rather than the traditional 200 cm distal to the Treitz ligament.

Different modifications of this surgery have had different results, and it was found that placing the anastomosis between 200 cm and 300 cm proximal to the body’s ileocecal valve would be ideal for maintaining an adequate level of nutrition.

It is possible for the MGB operation to be modified if there is inadequate weight loss or an excess amount of weight loss. This involves moving the anastomosis either proximally or distally.

* Prices are subject to change. Not valid on certain dates (blackout dates). Prices depend on the surgeon, surgery, additional fees, and schedule. Prices may rise because of BMI level and previous abdominal surgeries.

** All of the testimonials are covered in our disclaimers. Individuals results will vary; there is no guarantee stated nor implied.

Last Updated: February 2020, by Ron Elli, Ph.D.

Reviewed by Dr. Kimberly Langdon, M.D. October 2018