Compare Gastric Sleeve vs Gastric Bypass surgery and learn about expected weight loss, side effects, and cost to decide which surgical procedure is best for you. Deciding between gastric sleeve vs gastric bypass is an important decision and comparing the difference can help you make the final decision.  

Gastric Sleeve vs. Gastric Bypass Eligibility

The primary eligibility for both gastric sleeve and gastric bypass surgery in Mexico is that your BMI should be 40 or above, or at least 35 if you have a weight-related medical condition. But there are differences as well.

Gastric Sleeve Eligibility

Individuals who are considered high-risk surgical patients, such as those with serious heart or lung disease, are usually better candidates for gastric sleeve surgery. The anesthesia time in this surgery is relatively shorter, and recovery is faster. Secondly, people who have undergone abdominal surgeries previously will be more suited for gastric sleeve surgery.

Gastric sleeve only involves surgery of the upper abdominal area, which is typically less affected by the scar tissue from any previous abdominal surgeries. Finally, patients who are using multiple medications for anxiety or depression are more eligible for sleeve gastrectomy because this surgery will not so much affect how your body responds to or absorbs medications.

Gastric Bypass Eligibility

People who are suffering from very severe obesity, which means they have an excessively high BMI, may be more suited for gastric bypass surgery. That’s because they could lose a larger amount of weight with gastric bypass. Some research studies have shown that patients suffering from hypertension and high cholesterol levels may also benefit more from gastric bypass.

Individuals with chronic acid reflux (GERD) condition are also more eligible for gastric bypass surgery in many cases. GERD occurs when your stomach is unable to retain the food and acids, and the weak stomach muscle pushes the acid back up (reflux) into your esophagus. Acid reflux condition usually improves in patients who have undergone gastric bypass surgery.

Gastric Sleeve vs Gastric Bypass Cost

Gastric Sleeve Cost: Gastric sleeve surgery cost in Mexico begins from $4,000 on average, as opposed to $18,000 on average in the US and Canada. At the higher end of the spectrum, gastric sleeve may cost you up to $6,000 in Mexico and up to $25,000 in the US and Canada.

In Mexico, sleeve gastrectomy package cost will include the surgeon’s fee, hospital charges, one-night stay at the hospital, pre- and post-surgical lab work, and the nutritionist’s fee. Your cost in the US, even with insurance coverage, may be higher than that in Mexico because of the co-pays and deductibles that you will be charged.

Gastric Bypass Cost: Gastric bypass surgery cost in Mexico averages $5,500, as opposed to $25,000 on average in the US and Canada. Even if you choose the best bariatric surgeon in Mexico and a top-rated Mexico hospital for your gastric bypass, your cost may be well within $7,500 at the top end of the spectrum.

In comparison, the cost in the US or Canada can easily exceed $30,000 when you work with a well-qualified and experienced weight loss surgeon. Your Mexico gastric bypass package will include the surgeon’s fee, anesthesia charges, operating room and overnight stay costs, and airport pick-up and drop facility.

Comparison Table

Bariatric Surgery Cost Mexico US / Canada
Gastric Sleeve Cost $4,000 ~ $5,500 $18,000 ~ $25,000
Gastric Bypass Cost $5,500 ~ $7,500 $25,000 ~ $30,000

 

Surgical Risk Gastric Sleeve vs Gastric Bypass

Your risks for both gastric bypass and gastric sleeve surgery are minimized as long as you choose a highly competent bariatric surgeon in Mexico. Nevertheless, you should know the risks in order to make a sagacious choice.

Gastric Sleeve Risks 

Gastric sleeve surgery in Mexico may entail the following potential risks in a few cases: blood clotting, gallstones (the risk is higher with major or rapid weight loss), internal bleeding or excessive bleeding of the wound, hernia, perforation in the intestines or stomach, skin separation, and iron or vitamin deficiency.

You can minimize your gastric sleeve surgery risks by making sure that you avoid smoking at least for the minimum period advised by your surgeon or quitting the habit altogether. Secondly, if you gradually increase your daily physical activity and the duration of your fitness exercises, you will reduce your long-term risks related to gastric sleeve. 

Gastric Bypass Risks 

Serious risks with gastric bypass are rare, but some of the potential risks and complications after your gastric bypass surgery in Mexico include: dumping syndrome, breakage, gallstones, leakage, stomach or intestine perforation, hernia, bowel obstruction or pouch obstruction, calorie or protein malnutrition, cardiac or pulmonary problems, spleen injury, or ulcers in the stomach or intestine.

Many of the risks can be reduced if you follow a healthy and balanced diet as advised by your nutritionist after your gastric bypass surgery. A diet rich in proteins, vitamins, and iron will ensure that you do not face a deficiency and its related conditions. A regular exercise regimen will help you fight off cardiac and lung problems.

Rate of Weight Loss Sleeve vs Bypass

When comparing the amount of weight loss you can expect from gastric sleeve vs. gastric bypass, you should also look at the rate or speed at which you are likely to lose weight with each of these procedures.

Gastric Sleeve Weight Loss Rate

Gastric sleeve weight loss rate is rapid, and you will start losing weight almost immediately after your sleeve gastrectomy surgery in Mexico. In the first 15 days, you can lose anywhere from 10 to 20 pounds. Patients typically lose about one pound per day during this early phase. In the first three months, you would have shed about 35 to 45 percent of your excess body weight.

By the end of six months, about 50 to 60 percent of your excess weight would be lost. At the end of first year, if you have followed the surgeon’s post-operative instructions well, you would have lost about 70 percent of your total excess body weight. The rapidity of weight loss is higher in the first six months, and then it starts diminishing as you reach closer to your ideal body weight.

Gastric Bypass Weight Loss Rate

Gastric bypass weight loss rate begins relatively slowly compared to gastric sleeve. On average, you may start losing about two pounds per week. This means, by the end of six months, you can expect to lose about 50 pounds. However, this will depend on your original body weight at the time of surgery. In general, you would have lost about 30 to 40 percent of your excess body weight in the first six months.

At about 12 to 18 months after your gastric bypass surgery in Mexico, you would have lost a substantial amount of excess weight and would be closer to your target body weight. Many patients are able to lose up to 100 pounds by this time. On average, you may expect to lose up to 70 percent of excess body weight at 18 months.

Average Weight Loss Sleeve vs Bypass

Average weight loss in absolute terms after your gastric sleeve or gastric bypass surgery may not be very different. If you have followed the prescribed diet and exercise plan, you will have successful results.

Gastric Sleeve Average Weight Loss

In about 12 to 18 months after your gastric sleeve surgery in Mexico, you will lose about 60 to 70 percent of your excess body weight. This means, if you were 100 pounds overweight at the time of surgery, you would have shed off about 70 pounds of that excess weight.

It’s vital to understand that these are average statistical results, but individual results can vary depending on your general health condition and other factors. If you have been eating right and exercising regularly, you will have more significant weight loss results at 12 to 18 months.

Gastric Bypass Average Weight Loss

Within 12 to 24 months after your gastric bypass surgery in Mexico, you will lose about 65 to 70 percent of your excess body weight. According to a Mayo Clinic research study, patients who are motivated and comply with the surgeon’s instructions can lose half or more of their excess weight within two years after a gastric bypass.

You should know that the weight loss rate and the average weight loss figures usually refer to your “excess” body weight, and not your total starting weight. Your goal with gastric bypass surgery is to lose only the excess weight, and get closer to your ideal body weight.

Gastric Sleeve vs Gastric Bypass Post Op Diet

Post-operative diet after your gastric sleeve or gastric bypass will largely remain the same, but some key differences should be noted. How diligently you follow your diet plan will impact your final weight loss results.

Gastric Sleeve Post Op Diet

Your diet plan begins a few days ahead of your surgery date. For two days before your gastric sleeve surgery in Mexico, you should be on a clear liquid diet. For up to one week after your surgery, your surgeon may recommend you to have clear liquid (sugar free) diet only.

From the second week, you can add thicker liquids and smooth foods to the diet. From the third week, you can slowly choose soft solid foods and pureed foods. Within a month after your gastric sleeve surgery, you should be ready to test solid foods in your diet.

Gastric Bypass Post Op Diet

The general post op diet plan for your gastric bypass surgery in Mexico will be very similar to that of gastric sleeve as described above. However, some dietary guidelines are unique to gastric bypass. You should avoid foods that may cause dumping, such as sugars and excess fats or refined carbs.

The risk of Alcohol Use Disorder (AUD) is higher in patients who have had a gastric bypass. Therefore, avoiding or minimizing alcoholic beverages would be prudent even in the long run after your surgery. Vitamin B1 supplementation will be much more important for you after a gastric bypass.

Gastric Bypass vs Sleeve for Diabetes

Gastric sleeve and gastric bypass surgery usually help patients achieve similar level of early improvements in their symptoms of type 2 diabetes. However, there are some key differences in how they work.

Gastric Sleeve for Diabetes

Many patients suffering from obesity also have type 2 diabetes symptoms or may be taking medications to control it. Gastric sleeve surgery in Mexico can provide relief from these symptoms to a considerable extent. As the excess weight is lost, the diabetes symptoms begin to fade away.

With sleeve gastrectomy, researchers have noted early improvements in function of Beta-cell for patients who have obesity along with type 2 diabetes. As the Beta-cell function gets more regulated, the symptoms of diabetes will improve, at least in the early stage.

Gastric Bypass for Diabetes

Gastric bypass surgery in Mexico is known to have a deeper and long-lasting impact in reducing or eliminating type 2 diabetes symptoms. Studies have shown that patients who chose gastric bypass had relatively higher rates of diabetes remission and reduced incidence of diabetes relapse.

According to a major research study, which was published in JAMA Surgery, it was noted that after a gastric bypass, patients experienced more effective glycemic control in the long-term compared to those who chose gastric sleeve surgery. However, more research is still required to conclusively determine the outcomes, particularly in the longer term.

Recovery Time for Gastric Bypass vs Gastric Sleeve

Recovery time after gastric bypass and gastric sleeve surgery can vary in each case depending on individual factors, such as your medical condition, extent of surgery, and the type of surgical technique used.

Gastric Sleeve Recovery Time

Most patients will recovery after gastric sleeve surgery in Mexico in about one to two weeks. It is best that you plan your surgery in a way that you can recover and recuperate for a week after your gastric sleeve at your hotel in Mexico. When you are back to your home country, you should take another week’s rest at home before returning to work.

If your gastric sleeve surgery is performed using laser technique, the incisions will be smaller and consequently, your recovery may be speedier compared to a traditional surgery. Even after you resume your normal activities, it will take a few weeks before you can fully go back to your physical exercise and fitness routine.

Gastric Bypass Recovery Time

In general, the gastric bypass recovery time may be slightly longer than that of gastric sleeve. You may require about three weeks of rest after your gastric bypass surgery in Mexico before you can go back to your workplace. You should be aware that recovery time in individual cases will significantly vary, and there is no uniform recovery for everyone.

Make sure to follow your bariatric surgeon’s post-operative care instructions to have a safe and expedited recovery. While you can resume your regular activities in about three weeks, you should continue to avoid vigorous exercises, bending and lifting of heavy objects for another two to three weeks.

Gastric Bypass vs Sleeve Results

Both gastric sleeve and gastric bypass surgeries will often produce similar results in terms of long-term weight loss. But other physiological and medical benefits can vary in each of these procedures.

Gastric Sleeve Results

Gastric sleeve surgery in Mexico usually produces more predictable outcomes with a reduced risk of complications because the procedure is less complex. You will feel naturally less hungry after your vertical sleeve gastrectomy (VSG) because the procedure will reduce the hunger hormone ghrelin in your body.

Your digestive system will improve, and unlike gastric bypass, you will not experience significant nutritional deficiencies. The surgery will not make changes to your pyloric valve and small intestine, so even if you have pre-surgery medical problems, you will achieve safer results with gastric sleeve.

Gastric Bypass Results

Weight loss results after your gastric bypass surgery in Mexico will occur more gradually, but are also likely to be more sustainable in the long run. More research has gone into evaluating the long-term results of gastric bypass compared to gastric sleeve, which is relatively newer procedure.

Gastric bypass surgery will limit your amount of food intake, while malabsorption triggered by this surgery will further promote your weight loss. Your urge to eat more sugary foods will be reduced. Studies have shown that gastric bypass produces consistently positive outcomes among most patients.

Gastric Bypass vs Sleeve Success Rate

Success rate of both gastric sleeve and gastric bypass is very high, provided you work with an experienced Mexico bariatric surgeon. However, you should know the precise success rates to make an informed decision.

Gastric Sleeve Success Rate

According to the UCLA researchers, the success rate of gastric sleeve surgery is about 80 to 90 percent. In other words, approximately 8 or 9 patients out of 10 can expect to achieve successful weight loss results after their sleeve gastrectomy procedure. Clearly, the low failure rate makes gastric sleeve surgery in Mexico a popular procedure.

Researchers say that people can lose on average about 60 to 70 percent of their excess body weight with gastric sleeve. Most patients will reach their lowest body weight within one to two years after their gastric sleeve surgery. The key is to diligently follow your surgeon’s post-op care instructions.

Gastric Bypass Success Rate

Gastric bypass surgery in Mexico is often considered the gold standard in bariatric surgeries because of its high success rate. According to studies cited by Obesity New Today, more than 85 percent of the people who undergo a gastric bypass will lose and maintain at least 50 percent of their initial excess weight loss.

This indicates a gastric bypass success rate of about 85 percent. The average excess weight loss for most patients will be in the range of 65 percent. Early serious complication rates after gastric bypass surgery are about five percent, which indicates a very high degree of safe and successful results with this procedure.

Gastric Sleeve vs Gastric Bypass: Compare Pros and Cons

  • Lower Surgical Risk: Gastric Sleeve Surgery
  • Least Invasive: Gastric Sleeve Surgery
  • Fastest Rate of Weight Loss: Gastric Bypass Surgery
  • Lower Complications: Gastric Sleeve Surgery
  • Lower Side Effects: Gastric Sleeve Surgery
  • Lower Cost: Gastric Sleeve Surgery
  • Reversible: Gastric Sleeve Surgery is not reversible, but Gastric Bypass Surgery could be
  • More Effective at Resolving Comorbidities: Gastric Bypass Surgery

 

Compare Gastric Sleeve vs Gastric Bypass

Bariatric surgery statistics show that gastric sleeve and gastric bypass are being chosen more often for treating long-term weight loss than all other surgical procedures.

In fact, gastric bypass accounts for approximately 80% of all the bariatric surgeries in the United States.

Comparing gastric sleeve vs gastric bypass can be a time consuming process. And, no matter the surgery option you choose – both gastric sleeve and gastric bypass requires serious commitment to behavior and diet modifications.

Gastric sleeve and gastric bypass surgeries are two forms of bariatric surgery, which are procedures that can alter both the size and shape of the stomach. Although both methods are popular and result in weight loss surgeries, there are many differences between them.

If you’re considering gastric sleeve or gastric bypass surgery, here’s what you need to know about them to make an informed decision. The following chart compares the differences between gastric sleeve vs gastric bypass.

 Gastric SleeveRNY Gastric Bypass
Surgical RiskLow to moderateModerate
Rate of
Weight Loss
Slower than gastric bypassRapid
Average
Weight Loss
50-80% of excess body weight within 12 months60-85% of excess body weight within 12-18 months
Operating Time1-2 hours1-2 hours
Recovery Time3-4 weeks9-12 weeks
Hospital Stay2 nights3 nights
Time off Work2 weeks2-3 weeks
ReversibleNoCould be, but high risk
Medical ImplantNoNo
How it
Promotes
Weight Loss
  • Restrictive
  • Limits food intake
  • Reduces hunger sensations by removing Ghrelin (hormone that plays a key role in regulating body weight)
  • Restrictive & Malabsorption
  • Limits food intake
  • Reduces absorption of calories and nutrients
Change
to Intestine
  • No change to the intestine during gastric sleeve surgery
  • Small intestine is cut and bypassed during RNY gastric bypass surgery
Change
to Stomach
  • Stomach Size is Reduced
  • 60-80% of the stomach is removed, leaving a vertical narrow pouch 2-3 oz (60-100 cc)
  • New Stomach Created
  • Stomach is divided into a small upper pouch 1 oz (20-30 cc) and a larger lower pouch
Bariatric Diet & Dietary Guidelines
  • 600-800 calories per day during weight loss (24 months)
  • Eat protein rich foods
  • Avoid high calorie and fat food
  • Avoid carbonated drinks
  • Drink 6-8 cups of water a day
  • Eat 1000-1200 calories per day after 24 months

  • 800 calories per day during weight loss (12-18 months)
  • 3 small protein meals per day
  • Avoid sugar and fats to prevent dumping
  • Avoid carbonated drinks
  • Drink 6-8 cups of water a day
  • Eat 1000-1200 calories per day after 18 months

New Eating Habits After Bariatric Surgery
  • Eat small portions daily
  • Eat 4-6 times a day
  • Chew food throughly to puree consistency before swallowing
  • Eat slowly
  • Eat high-protein foods
  • No drinking with meals, drink water 30 minutes before or after meals

  • Eat small portions daily
  • Chew food throughly to puree consistency before swallowing
  • Eat slowly
  • Eat high-protein foods
  • No drinking with meals, drink water 30 minutes before or after meals

Bariatric Vitamins, Minerals & Nutritional Supplements
  • Multivitamin
  • Calcium
  • Vitamin B12
  • Multivitamin
  • Calcium
  • Iron
  • Vitamin B12
Pros, Benefits, Advantages of
Weight Loss Surgery
  • Pyloric valve and small intestine are kept intact
  • Reduces hunger (the portion of stomach that produces Ghrelin, the hunger stimulating hormone, is removed)
  • Option for patients who do not qualify for band or bypass
  • Fewer food intolerances
  • Low malnutrition risk
  • May be converted to gastric bypass or duodenal switch
  • Revision option for gastric band patients

  • Rapid weight loss during the first 6 months
  • Reduces food intake
  • Reduces calorie intake
  • Proven long-term effectiveness maintaining weight loss
  • Most common and widely accepted weight loss surgery

Cons, Risks, Disadvantages of
Weight Loss Surgery
  • Bleeding
  • Blood clots
  • Leakage
  • Infection
  • Pneumonia

  • Blood clots
  • Bowel obstruction
  • Dumping syndrome
  • Infection
  • Leaks
  • Nutrient deficiencies
  • Reflux (GERD)
  • Ulcers
Am I a Candidate for Weight Loss Surgery?
  • Gastric sleeve is best for obese patients
  • High-risk patients with a BMI > 60 as a “first-stage” procedure
  • Gastric bypass is most effective for patients with a BMI of 35-55

Mechanism of Action: Gastric Sleeve vs Gastric Bypass

Gastric Sleeve Surgery: After a gastric sleeve, about 10 percent of the stomach remains and is arranged into a small upright sleeve. This procedure promotes weight loss in two ways. The first is by restricting the amount of food you can consume, and the second is by reducing feelings of hunger by removing a large part of the stomach that produces the hunger-inducing hormone ghrelin.

Gastric Bypass Surgery: Gastric bypass, on the other hand, is both restrictive and malabsorptive dividing the stomach and the small intestine into two sections. Next, the smaller portion of the stomach is reconnected to the small intestine. Like a gastric sleeve, gastric bypass promotes weight loss by limiting food intake, but it also serves to reduce the calories and nutrients your body can absorb, thereby resulting in further weight loss. 

Reporting Results/Outcomes: Gastric Sleeve vs Gastric Bypass

Reporting of weight loss results and outcomes after bariatric surgery are often determined by 1) the percentage of excess weight loss, 2) the percentage of improvement or resolution of obesity-related comorbidities, 3) the risks of complications and 4) the risk of death.

Expected Weight Loss: Gastric Sleeve vs Gastric Bypass

Gastric Sleeve Surgery: Patients can expect to lose as much as 50 to 80 percent of their excess body weight within 12 to 24 months of surgery. Clinical studies show that patients experienced 55.4 percent excess weight loss with follow-up periods every 3 to 60 months. Patients can expect to lose 25 to 30 pounds within the first 30 days after surgery and achieve their ideal weight goal within 9 months after surgery.

Gastric Bypass Surgery: Patients can expect to lose up to 60 to 85 percent of their excess body weight within 12 to 18 months of surgery. Clinical studies show that patients were successful in sustaining weight loss over a long period of time – keeping more than 61 percent of the excess body weight off for up to 20 years. 

Improvement/Resolution of Co-Morbid Conditions

Both gastric sleeve and gastric bypass are effective in improving or complete resolution of comorbid conditions such as type 2 diabetes, high blood pressure (hypertension), high cholesterol, obstructive sleep apnea, and acid reflux (GERD). 

However, gastric bypass is more effective at resolving and improving obesity-related comorbidities, plus it has the advantage of being able to eliminate gastro-esophageal reflux disease (GERD) in most cases.

If your life is affected by any of these conditions, gastric sleeve or gastric bypass may help you.

Gastric Sleeve Surgery: Bariatric and metabolic studies report that gastric sleeve “resolved” type 2 diabetes (56%), high blood pressure (49%), high cholesterol (67%), and sleep apnea (60%). Additionally, clinical studies show that gastric sleeve surgery “improved” type 2 diabetes (37%), high blood pressure (29%), high cholesterol (38%), and sleep apnea (33%).

Gastric Bypass Surgery: Bariatric and metabolic studies show that gastric bypass “resolved” type 2 diabetes (76.8%), high blood pressure (61.7%), high cholesterol (70-95%), sleep apnea (85.7%) and acid reflux (98%). Furthermore, clinical studies show that gastric bypass surgery “improved” type 2 diabetes (85.4%), high blood pressure (78.5%), high cholesterol (70-95%), and sleep apnea (83.6%).

Complications: Gastric Sleeve and Gastric Bypass

Both gastric sleeve and gastric bypass have some complications in common such as bleeding and leakage from the staple line. Gastro-esophageal reflux disease (GERD) is common after gastric sleeve surgery, whereas gastric bypass will improve it. Some complications are possible with gastric sleeve, but are more common among gastric bypass patients, including dumping syndrome, intestinal obstruction, malnutrition or deficiencies, anastomotic stricture and gallstones.

Gastric sleeve patients require less time for recovery and can get back to most normal functions within three to four weeks. By contrast, gastric bypass patients need nine to 12 weeks for recovery time. However, following either surgery, patients can get back to work within two to three weeks. 

Considering Gastric Sleeve vs Gastric Bypass

No matter what weigh-loss surgery option you choose – gastric sleeve or gastric bypass… making a serious commitment to behavior and diet modifications is critical to sustained weight loss.

Interested in getting approved for gastric bypass or gastric sleeve surgery in Mexico? Find out if you qualify by clicking through to our online application form or contact us today to find out more. 

Gastric Sleeve vs Gastric Bypass

Gastric Sleeve Surgery

Gastric Sleeve Surgery is a weight loss surgery that reduces stomach capacity and food intake. The restriction process helps promote weight loss in two ways: 1) the smaller stomach restricts the amount of food that can be eaten and 2) the hunger hormone (ghrelin) is removed so appetite and feelings of hunger are lowered.