When you are looking at bariatric weight loss surgeries, it can be confusing trying to figure out what each one accomplishes. Gastric bypass surgery is known for the significant amount of weight loss potential it provides, and a gastric lap band is the least invasive form of bariatric surgery.
How do gastric bypass vs. lap band compare?
Gastric bypass changes both your stomach and the way your body absorbs calories, while the lap band only limits how much food you can eat. Because of this, gastric bypass surgery normally leads to more weight loss and more significant health improvements, but it also comes with a higher level of commitment.
This article will give you an overview of both surgeries and compare them side by side, so you will have a good understanding of what you can expect from each of them.
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What Is Gastric Bypass?
Gastric bypass is a type of weight loss surgery that creates a very small stomach pouch and reroutes part of your small intestine to skip a large portion of the normal digestion process. This causes you to feel full sooner and absorb fewer calories from the food you eat.
It works by using two techniques at the same time (restrictive and malabsorptive), which is why it is often a more effective weight loss surgery than older procedures.
Benefits of Gastric Bypass
Gastric bypass surgery is known for its many benefits, including:
- Often leads to 60% to 80% excess weight loss.
- May improve or even resolve type 2 diabetes.
- Can help lower blood pressure and cholesterol levels.
- It reduces hunger hormones, which makes it easier to control your appetite.
- Gastric bypass normally offers long-term weight loss results.
Risks and Drawbacks
- The surgery is permanent and not easily reversed.
- There is a higher chance of complications compared to simpler bariatric surgeries. (staple line leaks, blood clots, bleeding, and infection)
- There is a risk of vitamin and nutrient deficiencies.
- Patients may experience side effects like nausea or dumping syndrome.
- Requires lifelong lifestyle changes and use of nutritional supplements.
Recovery
Full recovery from gastric bypass surgery can take anywhere from six to eight weeks. Some people can return to many of their normal activities within 2 to 4 weeks but must wait until their surgeon clears them for more strenuous activities.
Patients must allow their stomachs to heal before they can process regular food again. They must follow a very strict reacclimation diet that starts with clear liquids, then regular liquids, purees, and soft foods before gradually reintroducing solid foods.
What Is Lap Band Surgery?
Lap band surgery is also called adjustable gastric banding and involves placing a silicone band around the upper part of your stomach. This creates a small pouch (your new stomach) that does not hold very much food and fills up fast when you eat.
The band can be gradually tightened or loosened to control how much food can pass through into your stomach. Unlike gastric bypass, it does not change how your body absorbs calories.
Benefits of Lap Band
- The amount of restriction is adjustable.
- The surgery is reversible.
- It is a less invasive surgery than gastric bypass.
- There is a shorter recovery time.
- Lower risk during the initial surgery
- No permanent changes are made to your stomach or the rest of your digestive system.
Risks and Drawbacks
- Weight loss is often slower and less significant than after a gastric bypass.
- It does not significantly reduce hunger hormones.
- It requires frequent follow-up visits for band adjustments.
- Risk of band slipping or erosion into the stomach.
- Infection, GERD from dilation, stomach necrosis.
- Many patients need revision or removal surgery later due to insufficient weight loss or issues with the band.
Recovery
Full recovery can take around four weeks, but many people can return to some of their normal routine after about two weeks. Ongoing check-ins are needed to monitor and/or adjust the band.
Similar to gastric bypass, after lap band surgery your stomach needs time to adjust and heal before it can handle solid foods. A strict diet must be followed that begins with clear liquids and progresses in stages until you can eat regular foods again. This process usually takes between four and six weeks for most patients.
The Cleveland Clinic reports that the average weight loss after lap band surgery is around 40% of excess weight over two years.
Gastric Bypass vs. Lap Band: Pros and Cons
Advantages (Pros)
Gastric Bypass
- Produces greater and more reliable weight loss.
- Helps improve obesity-related conditions.
- Reduces appetite through hormonal changes.
- Lasting weight loss success rates are higher.
Lap Band
- Can be reversed or adjusted.
- Recovery time is shorter.
- Surgical risks are lower.
- No permanent changes are made to the digestive system.
Disadvantages (Cons)
Gastric Bypass
- The surgery makes permanent changes.
- The changes made require the lifelong supplementation of vitamins and minerals.
- There is a higher risk of complications than with a lap band.
- The recovery time is longer.
Lap Band
- A lap band does not limit calorie absorption.
- Liquid calories and soft foods can easily pass through the lap band.
- Around 20% of patients need another surgery.
- Many patients do not achieve the weight loss they expected.
- Some people prefer not to have a device inside the body.
- More than half of lap bands are removed within 7 to 10 years.
- Lap band surgery is used less often due to lower success rates.
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How To Know the Best Choice for You
Choosing between gastric bypass vs. lap band depends on your health, weight loss goals, and how much change you are ready to make.
Gastric bypass surgery may be a better fit if you:
- Need to lose a significant amount of weight.
- Have conditions like type 2 diabetes.
- Are comfortable with a permanent procedure.
- Can commit to permanent lifestyle changes, including the use of supplements.
Lap band may still be considered if you:
- Prefer a reversible or adjustable option.
- Desire a less invasive surgery.
- Are willing to attend regular follow-up visits.
- Understand that results may be less significant.
An experienced bariatric surgeon can help review your medical history and guide you toward the option that makes the most sense for your needs and circumstances.
Where Can I Find Out More About Safe And Effective Options For Weight Loss?
Dr. Steven Batash with Batash Endoscopic Weight Loss Center offers several procedures that can help you lose weight without undergoing surgery.
Suture Sculpt Endoscopic sleeve gastroplasty (ESG) is a procedure that makes your stomach smaller by using sutures that are placed from the inside. Most patients are back to their normal routine within a week and they have no activity restrictions after the procedure.
Set up a consultation today to learn more about your options for non-surgical weight loss.
Frequently Asked Questions
What is the main difference between gastric bypass and lap band surgery?
Gastric bypass changes the structure of your stomach and intestines to reduce food intake and calorie absorption. Lap band surgery only restricts food intake using an adjustable band that limits food portions.
Which surgery leads to more weight loss: gastric bypass or lap band?
Gastric bypass usually leads to greater and more lasting weight loss compared to the lap band.
Why do doctors recommend gastric bypass over the lap band today?
Many doctors recommend gastric bypass because it produces more consistent weight loss and more significant improvements in health conditions. Lap band surgery has fallen out of favor due to higher rates of complications, reoperations, and less reliable weight loss results.
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