Medically Reviewed by:Peter F. Rovito, MD, FACSBariatric Surgeon
The most important takeaways when evaluating Lap-Band vs gastric bypass include:
- How they work: Both make you feel full sooner while eating. Only bypass reduces the amount of minerals you absorb. Only Lap-Band (i) requires initial and ongoing adjustment by your surgeon and (ii) is reversible.
- Qualify: Same requirements (30+ BMI with health problems, 40+ without)
- Hospital & recovery: Lap-Band is a less complicated procedure with a shorter operating time and shorter hospital stay. In-hospital and post-op recovery is similar.
- Weight loss & health improvement: Gastric bypass results in faster and more short- and long-term weight loss.
- Insurance: Same (if your policy covers bariatric surgery, both bypass and band will be covered)
- Cost: Same with insurance, bypass is about $9,000 more expensive without insurance.
- Diet & life after: Similar diet and exercise regimen. Bypass requires more stringent vitamin/mineral observation and supplementation.
- Complications & side effects: Both have a 99.8+% survival rate. Bypass has a higher risk of short-term complications. Band has a higher risk of long-term complications.
Read and click the sections below for everything you need to know to decide which procedure is best for you.
TABLE OF CONTENTS
Click on any of the topics below to jump directly to that section
- How They Work
- Weight Loss
- Health Benefits
- Cost Without Insurance
- Diet & Life After
- Patient Community & Expert Advice
- Find a Gastric Bypass or Lap-Band Surgeon
- Bypass: Feel full sooner while eating, absorb fewer minerals
- Band: Feel full sooner while eating, adjustable, reversible
Understanding gastric bypass surgery vs Lap-Band surgery starts with the fundamental differences in how each procedure impacts your digestive system:
Why Gastric Bypass Works
- Reduced stomach size makes the patient feel full sooner after eating
- Rearranged intestines causes the body to absorb fewer minerals
- Dumping syndrome symptoms deter patients from eating unhealthy foods
How Gastric Bypass Is Performed
Gastric bypass, also called Roux-en-Y gastric bypass or RNY for short, is performed using the following steps:
- Cut and staple the top portion of the stomach to create a small pouch at the end of the esophagus
- Leave the remainder of the stomach attached to the top of the small intestines
- Go further down the small intestine, cut it, and attach it to the pouch
- Take the end of the small intestine that is still connected with the non-pouch portion of the stomach and attach it to the bottom of the “Roux limb.” This allows the digestive juices produced by the stomach to “meet up” with the food in the intestines.
Why Lap-Band Surgery Works
- A band wraps around and squeezes a narrow section in the upper-middle part of the stomach. This creates a smaller stomach “section” above the band which fills up quicker after eating, causing the patient to feel full sooner and eat less.
How Lap-Band Surgery Is Performed
The Lap-Band, also called the gastric band or laparoscopic adjustable gastric band, has been used in Europe since the 90’s but wasn’t approved by the FDA in the States until 2001.
The gastric band surgery procedure involves the sewing of a silicone and Silastic band around the top of the stomach. A balloon around the inner surface of the band (imagine the inside of a bicycle tire) is connected to a tube that leads to a half-dollar-sized port above the abdominal muscles but below the skin.
During follow up visits, your doctor will add or remove saline solution (salt water) to make it tighter or looser. The tighter it is, the less hungry you feel and vice-versa.
The procedure is also fully reversible (unlike gastric bypass).
- Bypass results in ~5% more weight loss than Lap-Band
Patients lose weight quickly after both gastric sleeve and Lap-Band. However, gastric sleeve patients:
- Tend to lose weight faster
- Tend to reach a lower “low weight” than band patients
- Tend to gain back more weight over the long-term (bringing sleeve weight loss back in-line with Lap-Band weight loss by year 5)
The below chart compares average weight loss over time for each procedure.
|Timeframe||Gastric Bypass: Total Expected Weight Loss for 5’7”, 250 lb patient||Lap-Band: Total Expected Weight Loss for 5’7”, 250 lb patient|
|3 months||28 lbs||18 lbs|
|6 months||46 lbs||28 lbs|
|1 Year||60 lbs||37 lbs|
|2 Years||55 lbs||51 lbs|
|3 Years||55 lbs||51 lbs|
|5 Years||55 lbs||51 lbs|
- Lap-Band vs Gastric Bypass: Similar, but health improvement edge goes to bypass
Studies evaluating Lap-Band vs gastric bypass surgery have found very similar health improvement for diabetes, hypertension, sleep apnea, and most other obesity-related health problems, depending on which study is referenced.Click Here to See A Full List of Health Benefits
These surgeries can improve joint health. For every pound of weight lost, there is a 4 pound reduction in pressure on the knee joint (8). This improves mobility and reduces pain in the knees.
Both surgeries were part of research on cancer that included over 88,000 participants. Patients who undergo weight loss surgery have 33% less risk of developing cancer (9).
Risk rates were even further reduced for obesity-related cancers, including (10):
- Colon cancer
- Postmenopausal breast cancer
- Endometrial cancer
- Pancreatic cancer
|Co-morbidity||Bypass % Improved /Resolved||Band % Improved /Resolved|
|Hyperlipidemia (high levels of fat in the blood, high cholesterol)||73%||23%|
|High Blood Pressure (hypertension)||69%||43%|
|Joint/Bone Disease (osteoarthropathy)||43%||81%|
|Venous Stasis Disease||95%||–|
|Gastroesophageal Reflux Disease (GERD)||80%||87%|
|Non-Alcoholic Fatty Liver Disease||90%||Most|
|Mortality Reduction/ Life Expectancy (5 year mortality)||89%||89%|
|Quality of Life Improvements||95%||Most|
|Polycystic Ovarian Syndrome||Most||48%|
|Obstructive Sleep Apnea||98%||85%|
|Stress Urinary Incontinence||88%||82%|
- Lap-Band vs Gastric Bypass: Same BMI requirements
- Click here to calculate your BMI
In order to have Lap-Band surgery or gastric bypass surgery, your body mass index (BMI) must fall within one of the following ranges:
- Body mass index 40 or above or
- Body mass index from 35 to 40 as long as you have a serious obesity-related health problem (“comorbidity”) such as diabetes, asthma, hypertension, joint problems, sleep apnea, or one of many others.
- Body mass index from 30 to 35 may be accepted if certain health issues are present
- Gastric Bypass vs Lap-Band: Both are covered, as long as your policy includes bariatric surgery
- Click here to check your insurance
As long as your specific insurance policy includes weight loss surgery, both gastric bypass surgery and Lap-Band surgery will be covered.
The weight loss surgery insurance approval process can take anywhere from 1 to 12 months, depending on your insurance company and your situation.Click Here to Check Your Insurance
Following are the typical steps:
- Confirm with your doctor that your body mass index and health conditions fall within one of the two qualification requirements:
- BMI over 40 –OR–
- BMI over 35 with one or more of the following (insurance companies will usually not cover BMI’s below 35):
- Clinically significant obstructive sleep apnea
- Coronary heart disease
- Medically refractory hypertension
- Type 2 diabetes mellitus
- Other obesity-related health issues
- Complete 3 to 7 consecutive months of a medically supervised diet program, depending on your insurance company (can be coordinated by your bariatric surgeon).
- Schedule a consultation with your bariatric surgeon.
- Schedule a consultation with your primary care physician to obtain a medical clearance letter.
- Schedule a psychiatric evaluation to obtain a mental health clearance letter (usually coordinated by your bariatric surgeon).
- Schedule a nutritional evaluation from a Registered Dietitian (usually coordinated by your bariatric surgeon).
- Send all of the above documentation to your insurance company along with a detailed history of your obesity-related health problems, difficulties, and treatment attempts. The review process typically happens in under one month (usually coordinated by your bariatric surgeon).
- Insurance company sends approval or denial letter:
- If approved, your surgeon’s bariatric coordinator will contact you for scheduling.
- If denied, you can choose to appeal the denial.
Take the Easy Route – Your surgeon’s office will do most of this legwork for you. They are highly experienced in managing the process and may even have all of the required personnel on staff (e.g., registered dietitian, psychiatrist, bariatric coordinator, etc.).
Click here to find a Lap-Band or gastric bypass surgeon near you to get started. Most offices will check your insurance for free to confirm coverage criteria.
For more information about weight loss surgery insurance, see our Bariatric Surgery Insurance Guide.
- Bypass: ~$556/mo (~$24,000 total)
- Band: ~$334/mo (~$15,000 total)
The cost of surgery should not dictate which procedure you have. You should move forward with the procedure that is most likely to work for you after thorough research and a consultation with your surgeon.
Still, if you don’t have insurance that covers bariatric surgery, there will be a noticeable difference in Lap-Band vs gastric bypass cost:
- Gastric bypass: Average cost is about $24,000
- Lap-Band: Average cost is about $15,000
Surgeons in your area may charge as low as $15,000 for gastric bypass or $8,000 for Lap-Band.
Financing may also be available, depending on your credit. Payments are likely to be around the following if your procedure is financed over 5 years:
- Gastric bypass: $556/mo
- Lap-Band: $334/mo
Visit our Financing Weight Loss Surgery page for all the possible ways to finance your surgery.
Cost of Not Having Surgery vs Cost of Weight Loss Surgery
Even if you’re paying out of pocket, the cost of gastric bypass and Lap-Band is far less than the long-term costs of obesity-related health problems for morbidly obese people who don’t have surgery.
On average, weight loss surgery patients pay off their entire surgery and start getting ahead financially after only 2 years (11).
To illustrate: One study found that bariatric patients pay as much as $900 less per month as soon as 13 months after surgery than similar people who didn’t have surgery (12). Starting in month 13, that’s almost $11,000 saved per year in total medical costs.
Fewer prescription drugs alone have been found to save patients $3,000 or more per year (13).
- Lap-Band vs Gastric Bypass: Same pain, diet & activity, time off work, and time to full recovery
Recovery from both gastric bypass surgery and Lap-Band surgery includes:
- Timeline: 4 to 6 weeks to full recovery
- Time Off Work: 1 to 3 weeks
- Pain: Same as experienced after any laparoscopic surgery, managed with medication
- Diet: Slow transition from clear liquids to solid foods
- Activity: Slow transition back to regular activity and exercise
However, Lap-Band is a simpler procedure to perform and therefore requires a shorter operating time and a shorter hospital stay.
- Bypass: 4 hours
- Band: 1 hour or less
- Bypass: 2 to 3 days
- Band: Outpatient (leave hospital same day)
See the following pages for more information about Lap-Band vs gastric sleeve recovery:
- Lap-Band vs Gastric Bypass: Similar diet and exercise regimen, feel full sooner after both
- Gastric bypass: Requires stricter supplementation
- LAP-BAND®: Requires ongoing band and tube adjustments
Diet: Gastric Bypass Vs Band
Your Lap-Band vs gastric bypass diet transition is virtually identical:
- 2+ Weeks Before – Practice your post-surgery diet
- 2 Weeks Before – High protein, low sugar, low carbs
- 1 Week Before – Stop or change some medications
- 2 Days Before – Clear liquids only
- Midnight Before Surgery – Nothing to eat or drink
- In Hospital to 7 Days After Surgery (Varies by Surgeon) – Sugar-free clear liquids only
- Day 1 to Week 2 After Surgery (Varies by Surgeon) – Add thicker drinks & smooth foods
- Day 2 to Week 3 After Surgery (Varies by Surgeon) – Slowly test pureed foods & soft solid foods
- Day 3 to Weeks 4+ After Surgery (Varies by Surgeon) – Slowly test solid foods
Following are dietary guidelines for both gastric bypass and Lap-Band:
- Test one food at a time to make sure you can tolerate it
- Eat proteins first, in solid form (e.g., not protein shakes)
- Eat healthy “whole” foods
- Avoid processed foods
- Avoid sugary foods or drinks
- Eat slowly and chew thoroughly
- No starchy foods like rice, bread, and pasta
- Avoid any food that is difficult to digest (may be able to tolerate over time), such as:
- Fibrous vegetables like broccoli, celery, and corn
- Skin of any meat
- Tough meats
- Avoid whole milk products
- Drink 64+ oz (2+ liters) of fluids spread throughout the day
- No drinking 30 minutes before or after meals (other than gastric balloon)
- Alcohol only in moderation
Diet issues unique to gastric bypass include:
- Most gastric bypass patients (about 80%) will experience dumping syndrome when they eat the wrong foods. Conveniently, the wrong foods are the unhealthy ones, so while dumping syndrome symptoms are unpleasant, they help you keep your gastric bypass diet in check
- Patients who undergo the bypass procedure are at especially high risk of developing Alcohol Use Disorder (AUD) (14) (15) (16)
See the following for more information:
Vitamins: Gastric Bypass Vs Lap-Band
Weighing the upside of extra weight loss after gastric bypass with the downside of potential vitamin deficiency is a big part of choosing the right procedure. For example, if you already have vitamin deficiency problems, that may be the deciding factor for going with the gastric band
Due to gastric bypass surgery’s higher levels of malabsorption, gastric bypass patients:
- Are much more likely than Lap-Band patients to require Thiamin (Vitamin B1) supplementation
- Must be more vigilant in confirming no vitamin or mineral deficiencies
Some of the vitamin requirements that are the same for Lap-Band and gastric bypass include:
- Daily multivitamin
- 1 to 2 per day, forever
- Chewable or liquid versions are best (instead of tablets)
- Take with food (except dairy) to maximize absorption
- At least 200% of the Recommended Dietary Allowance (RDA) of iron, folic acid, thiamine, copper, selenium and zinc
- Daily calcium supplement, in the form of calcium citrate
- Must be calcium citrate (NOT other forms of calcium)
- 1000-1500 mg. daily, forever
- Chewable and liquid versions are best (instead of tablets)
- Try to find one that includes Vitamin D
- Take 2 hours apart from Iron supplements (or Multivitamin that contains Iron) to maximize absorption
For either procedure, you may be required to take one or more of the following depending on your vitamin levels:
- Folate (folic acid)
- Thiamin (Vitamin B1)
- Vitamin D
Exercise: Lap-Band Vs Gastric Bypass
After you’ve fully recovered from surgery (4 to 6 weeks), recommended exercise is the same for both Lap-Band and gastric bypass patients: 2.5 hours per week, spread out over 2 to 4 days.
Following this regimen will cause you to:
- Lose more weight
- Be more physically and mentally healthy
Learn more on our Exercise After Weight Loss Surgery page.
Food Addiction: Gastric Bypass Vs Lap-Band
Food addiction could be a problem after both gastric bypass and gastric band.
Our bodies secrete certain hormones, like ghrelin mentioned above, that tell us when we’re hungry and full, but hyperpalatable food (like junk food) may be overriding those hormone signals by overstimulating our reward centers, much like our bodies and brains react to an addictive drug.
You may have a bona fide food addiction if your desire for food takes priority over other parts of your life that you acknowledge to be more important, such as personal health, family, friends, work, your appearance, or avoiding obesity related health issues like hypertension, sleep apnea, or diabetes.
If left unchecked, food addiction can lead to obesity. For weight loss surgery patients, if not addressed prior to surgery, it can also lead to weight regain.
To find out if you may be suffering from food addiction, take our Food Addiction Quiz.
Relationships After Weight Loss
Significant weight loss after any type of bariatric surgery can lead to big changes with everyone around you.
While many of those changes are positive, some can also be extremely challenging and unexpected.
See our Relationships After Weight Loss Surgery page for important changes to prepare for.
- Gastric Bypass vs Lap-Band: Many complications/side effects are the same
- Band patients have long-term device-related risks and must receive ongoing fills/unfills
- Bypass patients have a higher risk of short-term complications & must deal with dumping syndrome and monitoring vitamin levels
Gastric bypass vs Lap-Band challenges are similar, with a few exceptions.
After each procedure:
- Most side effects like nausea, digestive issues, and body changes go away over time or after adjusting diet/lifestyle habits.
- Sagging skin is an issue for some patients, depending how much weight is lost, age, and whether the patient is a smoker
The following challenge is unique to gastric bypass:
- Dumping syndrome is an issue for most patients when they eat the wrong foods. It happens as a result of food (especially sugar) moving too quickly from the stomach into the small intestines and includes symptoms like nausea, diarrhea, bloating, fainting, anxiety, and weakness. It is usually treated effectively by diet changes and/or lying down after eating.
- More likely to develop a vitamin or mineral deficiency, so your surgeon will monitor your vitamin levels more closely and prescribe additional supplements as necessary.
- More likely to experience dental problems due to mineral malabsorption.
- See our Gastric Bypass Complications page for more information
The following challenges are unique to Lap-Band:
- Must go back to the surgeon many times in the first year to fill or unfill the band until the proper level of restriction is achieved. As time goes on, patients must continue to visit surgeon occasionally to adjust the fill amount and to shorten the tube connecting the port and band as the patient loses weight.
- Problems related to the band itself are possible, such as band erosion, band intolerance, band leak, or band slippage are not possible with gastric bypass because there is no gastric band used
- Problems related to the skin port (where the surgeon inserts a needle into your abdomen to fill and unfill the band to achieve the proper level of “restriction”) are also possible, such as port flip or dislodgement, port leak, port infection, or port dislocation.
- See our Lap-Band Problems & Complications page for more details.
Full Lap-Band Vs Gastric Bypass Downsides Comparison
|Band Problems (band erosion, band infection, band intolerance, band leak, band slippage)||–||Up to 18% of patients|
|Body Feeling Changes||Yes||Yes|
|Bowel Function Changes (diarrhea, constipation, foul-smelling bowel movements and flatulence, difficulty swallowing, gurgling noises)||Yes||Yes|
|Bowel Obstruction||About 3% of patients||Yes|
|Deep Vein Thrombosis||Yes||Yes|
|Non-Alcoholic Fatty Liver Disease||90%||Most|
|Dumping Syndrome||About 70% of patients||–|
|Esophageal Dilation||Yes||About 14% of patients|
|Evisceration & Incisional Hernia||Yes||Yes|
|Food Trapping||Up to 2% of patients||–|
|Gallstones||Up to 1/3 of bariatric patients||Up to 1/3 of bariatric patients|
|Food Trapping||Up to 2% of patients||–|
|Gastroesophageal Reflux Disease (GERD)||Yes||Yes|
|Gastrointestinal Leaks||About 2% of patients||–|
|General Anesthesia Complications||Yes||Yes|
|Hemorrhage (Bleeding)||About 2% of patients||Yes|
|Infection||About 3% of patients||Yes|
|Intolerance to Certain Foods||Yes||Yes|
|Nausea, Vomiting and/or Stomach Cramps||Up to 70% of patients||Yes|
|Organ Injury During Surgery||Yes||Yes|
|Port Problems (port flip/ inversion or dislodgement, port leak, port infection, port dislocation)||–||About 21% of patients|
|Pouch Dilation||–||Up to 17% of patients|
|Skin Changes (e.g. acne, dry skin, sagging skin, etc.)||Yes||Yes|
|Stenosis/Stricture||About 5% of patients||–|
|Thrush (Yeast Infection)||Yes||Yes|
|Vitamin & Mineral Deficiency / Malnutrition / Malabsorption||Yes||Yes|
For definitions of any issue in the chart, see our Bariatric Surgery Complications page.
- Lap-Band vs Gastric Bypass: Winner & Loser by Category
- Overall Winner: Depends on your situation
Your individual situation will determine whether Lap-Band or gastric bypass surgery is best for you. Following is a review of which procedure is “better” in each category discussed on this page.
- Most Popular Procedure: Gastric Bypass
- Most Short-Term Weight Loss: Gastric Bypass
- Most Long-Term Weight Loss: Gastric Bypass
- Best Health Improvement Gastric Bypass
- Easiest to Qualify: Tie
- Low-Cost Procedure (With Insurance): Tie
- Low-Cost Procedure (Without Insurance): Lap-Band
- Best Post-Op Diet: Lap-Band
- Fewest Risks & Side Effects: Tie
Discuss each of the pros and cons with your surgeon before making a final decision. Click here to find a weight loss surgeon.
- Patient Experiences
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