Gastric Bypass Diet

After a bariatric surgery procedure the patient will typically have a very small appetite due to the greatly reduced stomach capacity. It is this greatly reduced stomach size that leads to initial nausea and vomiting at the early stages after gastric bypass surgery.

Post-surgery, a gastric bypass surgery diet typically consists almost entirely of clear liquids. This restrictive diet includes foods such as clear broth, diluted sugar-free fruit juices or sugar-free gelatin. The next phase in the diet allows for a blended or pureed sugar-free diet for a period of at least two weeks.

Dehydration is extremely common immediately following gastric bypass surgery. Limitations on fluid intake, reduced caloric intake and a higher incidence of vomiting and diarrhea are all factors that contribute to dehydration in the patient.

In the long term a post bariatric surgery diet will include a daily multivitamin pill for life to help accommodate for nutritional deficiencies while doctors typically recommend diets high in protein and low in fat due to patients not being able to eat large quantities.

Eating Tips

The following are tips for ways to change your eating habits after you have had gastric bypass surgery. Your doctor can help you craft a custom diet plan, but these tips below are generally recognized as universal best practices for how to eat properly.

  • Eat slowly – Take your time eating your meals. You should spend at least 20-30 minutes to finish your meal. Eating too quickly can lead to nausea or vomiting.
  • Chew thoroughly – Chew your food thoroughly as any big chunks of food can become stuck in your new, smaller stomach inlet to the intestines. Chewing thoroughly will also help to slow you down.
  • Eat 6 small meals – instead of the standard 3 large meals you should eat smaller meals throughout the day. This will help to avoid stomach stretching and help the body digest the smaller meals more efficiently.
  • Stop eating when full – This part is critical as if you continue to eat once you are full you risk making yourself sick but even more importantly, you risk stretching your stomach or even rupturing your new stomach pouch.

Drinking Tips

How and what you drink is just as important as what you eat. Following these tips on proper fluid intake will help you post gastric bypass surgery.

  • Avoid drinking while eating – Drinking while eating can fill you up faster and cause you to not take in the nutritional requirements that your body needs.
  • Take small sips – You should avoid gulping while drinking and instead focus on small slow slips.
  • Avoid High Calorie Drinks – Drinks containing sugar, corn syrup or fructose should ne

Foods to Avoid

Because you will have reduced ability to take in food, you will want to ensure that you are eating the foods that provide the nutrition that you need. You do not want to “waste” meals eating foods that do not contain the vitamins and nutrients your body needs to maintain a healthy balance.

  • Avoid foods high in fat, sugar or carbohydrates – High calorie foods should be avoided. This is standard for any healthy diet.
  • Avoid alcohol – Alcohol contains “empty calories”. These are calories without nutritional benefit.

Gastric Bypass Complications

Gastric bypass surgery complications can be broken down by short term and long term complications. In the short term after gastric bypass surgery there are risks for pneumonia, blood clots, infections and potential leaks in the stomach. These complications are due to the surgery itself as well as the body reacting to the massive change that has taken place to the stomach and GI system.

Long term gastric bypass surgery complications are potential (but not likely) ulcers, gallstones, nutritional deficiency, hernias and “dumping syndrome”.

Dumping Syndrome

The “Dumping syndrome” which is one of the most common side effects of gastric bypass surgery is when the contents of the stomach move too rapidly through the small intestine causing nausea, weakness, fainting, perspiration and sometimes diarrhea. Typically many people are unable to tolerate certain foods, especially those that are high in sugar or fat. These foods are often linked to “dumping syndrome” and avoiding these foods can help lessen or even eliminate the possibility of this side effect. Fortunately, “dumping syndrome” is one of the least dangerous complications in terms of impact on your long term health outlook.

Iron Deficiency

Iron deficiency is a potential complication due to the fact that the duodenum is bypassed during this procedure and it is in the duodenum that much of your iron is absorbed here. This is more of potential complication with women than it is with men. This issue is best handled by taking an iron supplement or by making sure you eat foods that are high in iron.

Stomach or Intestinal Leaking

In rare cases, patients may have leakage either from the stomach or from the intestines. This is due to improper sealing and can lead to serious infections. This is something that is monitored very closely, especially immediately after the surgery has been completed.

Mortality Rate

Gastric bypass surgery has a mortality rate of about 1/350. This mortality rate is in line with other major surgical procedures that are performed on severely obese people who potentially have multiple obesity related health conditions. People that are at higher risk are usually those who have more severe health conditions or are older in age. The most common cause of death as a result of gastric bypass surgery are pulmonary embolism or an infection located at the site of stomach stapling or sutures.

Additional Risks and Complications

There are potential complications and risks that you should be aware of that affect all bariatric surgeries in general beyond what we have highlighted above specific to gastric bypass. These include both short and long term complications that you should be discussing with your doctor.

Gastric Bypass Cost

Gastric bypass surgery cost can range and be as little as under $10,00 to quite expensive and costing up to and over $35,000. The costs can vary depending on the type of surgery performed and length of time spent in the hospital in recovery. If you are paying out of pocket, the hospital will typically be able to work with you to establish a payment plan or even a reduced payment. Gastric bypass surgery costs can be made up of :

  • Pre-operation lab and testing fees
  • X-rays
  • Anesthesia
  • Hospital room
  • Surgeons Fees
  • Nutrition Counseling
  • Psychological Counseling
  • Exercise Training
  • Diet needs

Insurance Coverage

Gastric bypass surgery can be covered by insurance, Medicare or Medicaid but that coverage is determined on a case by case basis. For those whose insurance does not cover the cost of the surgery, there are often financing options that are available. Typically your doctor will have more information for you about your options and figuring out a payment method that meets your needs.

In order for your insurance to be able to potentially cover some of the costs of your gastric bypass surgery you need to be able to demonstrate that you have attempted all other options available to reduce your weight. If you still are unable to get your BMI below 40 and are considered morbidly obese, your doctor can help you put together a strong case as to why you need gastric bypass surgery to be covered by your insurance company.

Keep in mind that there are many portions of the after-care that will not be covered by insurance no matter what. This can include dietitians and exercise programs that are vital to long term weight management and healthy living.

Medicare Coverage

Medicare will sometimes cover some of the costs of gastric bypass surgery. However, typically medicare will require that you meet both the obesity requirements (BMI > 40) and have a obesity related health condition such as diabetes or heart disease. In addition you must have the surgery performed by a Medicare approved bariatric surgery facility.

Gastric Bypass Surgery

Gastric bypass surgery is used to treat morbid obesity which is defined as having a Body Mass Index greater than 40. Gastric bypass is a weight loss surgery that involves both restrictive and malabsorptive technique to achieve weight loss.

At its core a gastric bypass surgery consists of the creation of a smaller thumb-sized pouch derived from the upper stomach, while at the same time bypassing the remaining larger portion of the stomach. This restricts the quantity of food that can be eaten and in turn lowers the possible caloric intake.

The second basic component of gastric bypass surgery is the reconstruction of the GI tract which allows the newly partitioned stomach segments to drain properly. The method used in this reconstruction can differ in the lengths of small bowel used, the degree to which food absorption is affected, and the likelihood of adverse nutritional effects.

Roux-en-Y Gastric Bypass Surgery

Roux-en-Y Gastric Bypass is the most common form of gastric bypass being performed today. This procedure has been shown to be effective and safe over long term duration and thus it is widely accepted by both surgeons and insurance companies as the leading choice for weight loss surgery. The Roux-en-Y gastric bypass involves separating the stomach into a smaller, upper pouch and a larger, lower section, while the small intestine is divided and rerouted. The new small pouch is created at the top of the stomach where the food enters using staples to completely separate it from the lower portion of the stomach. The remaining larger, lower portion of the stomach is bypassed but not removed from the body as it is in something like the gastric sleeve surgery. Since the natural stomach outlet is located in the bypassed portion of the stomach it is also bypassed meaning a new connection is created to the intestines.

Advantages of Gastric Bypass

Typically most people will lose about 10 to 20 pounds in the first month after the surgery. Weight loss will continue but decrease over time. The people who see the best results are those who adhere to a strict diet and exercise routine, which is essential to keeping the weight off long term. In addition the following are benefits one can expect from gastric bypass surgery:

  • Increased weight loss due to being a restrictive and malabsorptive surgery
  • Verified long term success
  • Insurance coverage is likely

Gastric bypass surgery not only has the obvious benefit of helping shed weight, but it can help improve a variety of medical conditions that are related to obesity.

  • Type 2 Diabetes
  • High Cholesterol
  • High Blood Pressure
  • Type 2 Diabetes
  • Sleep Apnea
  • Hypertension
  • Joint Pain
  • Asthma

Disadvantages of Gastric Bypass

With any other major medical procedure, there is the potential for gastric bypass complications ranging from minor to major. It is understanding the potential for those risks and managing accordingly that will best help you get through anything that may come arise.

  • Complex operation comes with risks including infection and bleeding
  • “Dumping Syndrome” is associated with this procedure
  • Potential for vitamin and nutrient deficiency due to malabsorptive component of this surgery

The Cost of Gastric Bypass

When considering if gastric bypass surgery is right for you, the cost of the surgery is a major consideration. Read more to learn more about the cost of gastric bypass.

Gastric Bypass Complications

There are complications associated with all weight loss surgeries. It is understanding what to expect and how to manage those complications that will. Read more to learn more about the potential complications of gastric bypass surgery.

How Do I Know if This is the Right Surgery for Me?

There are positives and negatives to gastric bypass surgery and that is why working with your doctor to determine the best option for you is critical. In the meantime you can compare the similarities and differences between some of the major weight loss surgeries with our weight loss surgery comparison infographic.

Finding the Right Doctor

If you are looking for a doctor in your area that can consult with you about gastric bypass surgery you can either browse our directory of bariatric surgeons in your area and contact them directly or contact us for assistance in finding the right weight loss specialist to meet your needs. We recommend reaching out to multiple doctors in order to find one that you are comfortable with before making your decision.

Diet After Gastric Banding

As with any of the other weight loss surgeries, your diet after have gastric banding is critically important to the overall success and your total weight loss. Because gastric banding is a restrictive procedure it relies on limiting the amount of food that can be taken in but does not regulate what is absorbed by the body.

As a general rules your newly created pouch may get larger with time. However you do not want to stretch it out and so that means you must listen to your doctor when he/she tells you how much food you should be eating. While a normal stomach can hold up to 4 cups of chewed food, your pouch after surgery will not hold more than about 1 cup of chewed food.

Eating Tips

The following tips are recommended for those people who have had gastric banding:

  • Eat slowly and chew each bite very slowly and completely
  • Do NOT swallow food until it is chewed completely. The opening between your new stomach pouch and the large part of the stomach is very small. Food that is not chewed properly can block this opening
  • Take only 20 – 30 minutes to eat a meal. If you vomit or feel nausea, you may be eating too fast
  • Eat 6 small meals during the day instead of 3 bigger meals
  • Do NOT snack between meals
  • Stop eating as soon as you feel full
  • Do NOT eat if you are not hungry

Drinking Tips

Not only is it important to eat the proper way but how you drink and take in fluids is important. The following tips are highly recommended for you while drinking:

  • You will need to drink up to 8 cups (64 ounces) of water or other calorie-free liquids every day
  • Do NOT drink anything for 30 minutes after a meal
  • Do NOT drink anything while you are eating
  • Take small sips when you are drinking
  • Your doctor may tell you not to use a straw

Foods to Focus On

After surgery you will want to make sure you are eating the right foods. The right foods are ones that will provide your body with the nutrients it needs and help promote healthy weight loss. The right food starts with Low-fat, high protein and proper dairy selections. This includes:

  • Skinless chicken
  • Lean beef or pork, fish
  • Whole eggs or egg whites
  • Beans
  • Low-fat or nonfat hard cheeses
  • Cottage cheese
  • Milk
  • Yogurt

Foods to Avoid

It is important to get as many nutrients as possible without taking in too many calories so avoiding high calorie, low-nutritional foods is very important. Avoiding the following foods is recommended:

  • Do NOT eat foods that contain a lot of fats, sugar, or carbohydrates as these are foods that dissolve easily or pass quickly through the band
  • Do NOT drink a lot of alcohol. Alcohol contains a lot of calories, but it does not provide nutrition
  • Do NOT drink fluids that contain a lot of sugar, fructose, or corn syrup
  • Avoid carbonated drinks, such as soda

Gastric Banding Cost

The cost of gastric banding like all other weight loss surgeries can vary but will easily top $10,000 and can come close to $20,000 depending on a few factors including if you choose a LAP-BAND or a Realize band, and the additional costs incurred as a part of having that surgery. The one cost that is typically associated with gastric banding that you will not have to pay with other bariatric surgeries is the cost for adjusting the band after you have had your surgery. While this may vary, the average cost for any type of gastric banding procedure is going to be just about $19,000. Costs typically are higher in large metropolitan areas and tend to be more expensive on the east and west coast.

Insurance Coverage

Gastric banding will sometimes be covered by insurance providers but that will also vary from provider to provider. Medicare can cover the cost of gastric banding surgery provided that you meet all of the criteria for weight loss surgery as established by the NIH. Even if your insurance provider does cover the cost of the procedure you can still expect out of pocket expenses to range from the hundreds to thousands of dollar which will be needed for copays and other out of pocket necessities not covered by insurance.


Since 2006 many health insurance plans, including Medicare and, in some states, Medicaid, have covered the cost of LAP-BAND surgery. It is not uncommon for all costs of your LAP-BAND surgery to be picked up by your insurance company. Often whether or not your surgeon is in-network or out of network and whether the surgery is performed on an in-patient or out-patient basis will help determine how much your insurance will ultimately cover.

For those who don’t have insurance to cover the procedure the costs are typically broken out between the surgery itself, including the facility, the surgeon and anesthesiologist fees which can generally cost from $12,000 to $30,000. Follow-up care and adjustment fees usually range from $35 to $200 per visit, depending on the type and length of care provided. This is for patients who are paying out of pocket or financing their surgery.

Realize Band Cost

The cost of the Realize Band is typically very similar to what you would expect to pay for the LAP-BAND. Insurance will also tend to cover the REALIZE band at the same rate as the LAP-BAND. Adjustments and fills for the Realize band are typically covered for the first year after surgery. If you are paying out of pocket the cost for these post-surgery adjustments and fills can range from about $75 to $300.

The LAP-Band versus the REALIZE Band

When it comes to gastric banding surgery in the united states, there are two primary choices that you can select from that have been approved and are in use today. These choices are the LAP-band created by Allergan and the REALIZE Band created by Ethicon Endo-surgery (a division of Johnson & Johnson). Both of these options are gastric banding solutions that achieve weight loss by placing a band around a portion of the stomach and neither involves the cutting or restructuring of the stomach. Both make use of a saline filled silicone tube that can be adjusted by your doctor to tighten or loosen the restriction on your stomach.

LAP-Band In Detail

The LAP-Band system was the first FDA approved gastric banding device for use in the United States. More people have chosen the LAP-Band than any other gastric banding option. It has the most long term data in terms of success and know complications.

  • The LAP-Band was the first of the two to be developed and approved for u
    se in the United States.
  • Clinical trials began in 1995 and it was approved by the FDA in 2001.
  • Performed Laparoscopically
  • Average of 5-8 adjustments per year for first 2 years
  • 5 year results: 55% excess weight loss

REALIZE Band in Detail

Physically, the REALIZE Band is the widest of all gastric bands. Ethicon, who is the manufacturer of the REALIZE Band, feels this feature helps improve hunger control when compared to other gastric bands. It is a high volume (9ml total capacity) and low pressure band. This allows for a patient to feel full with less chance of experiencing swallowing difficulties. The REALIZE Band is known to be very safe and durable.

  • The REALIZE band was actually developed first abroad in Sweden in 1985.
  • Clinical trials began in 2003 and it was approved by the FDA in 2007.
  • Performed Laparoscopically
  • Average of 4 adjustments for year 1 and 2 adjustments for years 2 and 3
  • 5 year results still unknown as data is still being collected
  • Short term results on par with LAP-Band data

The REALIZE Band also has some additional benefits that do appeal to many people. Their software program allows you to track your weight and enter daily food diaries to measure the calories, grams of protein, fats, and carbs that you are consuming. Some people have found this to be an attractive feature that leads them to ultimately choose the REALIZE Band.

Which is the right choice for me?

Comparing the two gastric banding options shows us that they are very similar in both method and results. The right choice will ultimately come down to you and your doctor and what the two of you feel most comfortable with and makes the most sense for each patients individual situtation.

Gastric Sleeve Surgery Cost

The cost of gastric sleeve surgery can be quite expensive especially since not all insurance companies will cover this procedure just yet due to how new the practice is. Gastric sleeve surgery cost on average is close to $10,000 and can easily total up to over $20,000 when you factor in all the additional related expenses that go along with having this surgery. This cost is typically a bit less than you would expect to pay for traditional gastric bypass surgery.

Due to the relative newness of gastric sleeve surgery, insurance is less likely to cover this procedure than a more “routine” gastric bypass surgery. This means that the patient must come up with the costs out of pocket or work out a financing plan with the surgeon who will be performing the procedure.

Gastric Sleeve surgery costs include hospital fees, surgeon fees, anesthesia, pre and post-op car, hopsital bed time, x-rays and scans. In addition there are costs that are not included in your bill but can add up over time. These costs include vitamins and supplements, behavior modification therapy, exercise, and diet counseling. In addition there is often costs for body contouring surgery (cosmetic surgery) for the removal of excess skin.

Additional Factors that Impact Cost

The following factors can also play a part in determining what your cost will be for gastric sleeve surgery

  • Location – Where you have the surgery performed affects the price. Areas without many doctors who can perform this procedure may see higher surgeons fees.
  • Travel – Will you need to travel to your surgeron? If so, where will you stay? These costs can add up quickly if you have to pay for airfare and hotel to have the surgery performed with a surgeon that you feel comfortable with.
  • What type of patient are you – Are you having the surgery performed as an in-patient in the hospital or as an outpatient. This can affect the costs of gastric sleeve surgery greatly.

Gastric Sleeve Cost Compared to Other Weight Loss Surgeries

Read more about how the cost of gastric sleeve surgery compares to other weight loss surgery options and additional factors that can have an impact on the total price.

Gastric Sleeve Surgery

Gastric sleeve surgery (sleeve gastrectomy) is one of the newer forms of bariatric surgery but has quickly been gaining popularity over the recent years. Also known as vertical sleeve gastrectomy, vertical gastroplasty or sleeve gastroplasty, this procedure is another option for those looking to help with their morbid obesity through gastric bypass surgery. The gastric sleeve is a restrictive procedure meaning that it achieves weight loss results by restricting the amount of food that your body is physically able to take in. There is no malabsorption involved with this procedure but can be followed up with a malabsorptive procedure afterwards if the patient wishes.

How Does Gastric Sleeve Surgery Work?

Gastric sleeve surgery involves permanently removing a large portion of the stomach, anywhere from 60% to 85% of the total stomach. The portion left behind is a slim tube or “sleeve” that will serve as your new stomach. This stomach is already connected naturally to the stomach inlet and outlet which means that no rerouting of the intestines is needed.

What differentiates a gastric sleeve procedure from other weight loss surgeries is the nerves to the stomach and the outlet valve (pylorus) of the stomach remain intact to preserve the functions of the stomach while at the same time, reducing the volume it is able to hold. There is no bypass of the intestines with the gastric sleeve, only stomach capacity reduction. A sleeve gastrectomy also works because it removes the part of the stomach that produces Ghrelin, which is a hormone that stimulates appetite. This helps to noticeably reduce without completely eliminating a person appetite.

Advantages of the Gastric Sleeve

The primary features of gastric sleeve surgery are reducing the size of the stomach up to 85%, to restrict food intake while also reducing the hormones that create the craving for food due to the removal of the excess stomach portion. This reduces the production of the Ghrelin hormone which in turn reduces the hunger sensation.

The advantage of gastric sleeve surgery include:

  • 30 to 60% extra weight loss within the first 12 months of the procedure
  • Less invasive than gastric bypass
  • No cutting or, disconnection or alteration of the intestines
  • No risk of “dumping syndrome” typically associated with gastric bypass
  • No need for implementation of foreign devices in to the body such as a gastric band
  • Less restrictive post-surgery diet
  • Procedure may be followed by gastric bypass or duodenal switch for even better results for super obese patients (those with a BMI > 70)
  • Can be performed laparoscopically on extremely obese patients

Disadvantages of the Gastric Sleeve

As with any medical procedure of this nature, there is always the potential for adverse affects. The biggest potential drawback for some people with this procedure is that is irreversible and thus you must really understand all of the implications before proceeding with gastric sleeve surgery.

In addition the following potential drawbacks should be taken in to consideration:

  • Since the gastric sleeve is a restrictive weight loss procedure and not malabsorptive, inadequate weight loss or weight regain is more likely to occur than would in a procedure involving intestinal bypass
  • The newly created pouch has the potential to stretch over time
    Weight Loss only really noticeable with total change in diet combined with exercise
  • Additional surgery may be required for follow-up procedures to combine methods
  • Leakage may occur at the site of stapling
  • Still no knowledge of long term results due to short history of procedure
    Insurance may not cover due to the short history of the procedure making the cost potentially prohibitive for many people.


The cost for gastric sleeve surgery is similar to other major weight loss surgery options. It can be an expensive procedure that you would need to talk to your insurance company about whether or not it would be covered.
Read more about the factors that influence the cost of gastric sleeve surgery.

Success Rates & Results

While this procedure is still in the early stages compared with other weight loss surgery procedures, some of the initial findings are pointing to this procedure showing some very good success rates in both weight loss and the alleviation of comorbidities related to that excess weight.
Read more here about the success of gastric sleeve and the results seen so far.


There are potential complications related to gastric sleeve surgery just as there are with all form of bariatric surgery. Understanding what those potential risks are and being prepared will help you should any of these complications arise after your surgery.
Read more about gastric sleeve complications and risks.

What Can I Eat After My Surgery?

There will be a drastic change in your diet after your surgery and the amount of food you can physically eat. You will need to ease in to your new diet and retrain your body to the new, smaller amount of food you will be eating from that day on.
Read more about what makes up a gastric sleeve diet and how what you choose to eat will decide the eventual outcome of your sleeve gastrectomy.

How Do I Know if This is the Right Surgery for Me?

There are positives and negatives to the gastric sleeve and that is why working with your doctor to determine the best option for you is critical. In the meantime you can compare the similarities and differences between some of the major weight loss surgeries with our weight loss surgery comparison infographic.

Finding the Right Doctor

If you are looking for a doctor in your area that can consult with you about gastric sleeve surgery you can either browse our directory of bariatric surgeons in your area and contact them directly or contact us for assistance in finding the right weight loss specialist to meet your needs. We recommend reaching out to multiple doctors in order to find one that you are comfortable with before making your decision.

Duodenal Switch Diet

The diet for a duodenal switch patient is important to understand because of both the restrictive and malabsorptive elements that make up this surgery. One of the main things that someone considering the duodenal switch must understand ahead of time is that it is common for people to suffer from malnutrition after having this procedure, even when consuming a normal diet.

Vitamin Supplements

Because duodenal switch patients are at risk for vitamin deficiencies they will have to be prepared to take between 10 and 15 vitamin supplements for the rest of their lives. This is necessary to ensure that the body receives all the vitamins required for healthy living. Because of this large amount of vitamins that will need to be taken, patients can expect to have to spend between $1,000 and $1,500 per year out of pocket to cover the cost of these supplements. Patients should take this in to consideration before moving forward with a duodenal switch procedure.

Vitamin supplements that patients will typically have to take from then on after surgery include:

  • Multi-vitamin with minerals – At first you will need to take these in liquid, chewable or crushed form. You will be able to take whole pills after just a few weeks.
  • Calcium – It is recommended to take 500 to 600 mg three times a day. Calcium citrate (such as Citracal) is best
  • Fat-Soluble Vitamin – These contain vitamins that are easy for your body to absorb. You need to take 3 tablets per day (1 with each meal)
  • Other Supplements – Some people also need extra iron, vitamin B12 or potassium

Diets to Avoid

While it is uncommon among the super-obese it is highly recommended for duodenal switch patients to avoid a strict vegan diet. Due to the limited ability to take in and absorb food, patients must ensure that they are taking in a higher amount of their diet in the form of biological proteins. This helps ensure the body receives the necessary nutrients and avoids hypoproteinemia.

Diet Tips

The following tips are recommended for patients who have undergone the duodenal switch surgery:

  • Eat at least 80 to 100 grams of protein a day. – You need to eat a high-protein diet in order for your body to get the protein that it needs. Each meal should include a good source of protein (such as eggs, lean meats, and low-fat or fat-free milk products).
  • Avoid foods high in fat – Your body will not be able to absorb fats as well as it did before surgery. High-fat foods may cause diarrhea (loose, watery stools), frequent bowel movements and increased gas. Large amounts of high-fat foods may also slow your weight loss.
  • Avoid foods that are high in sugar (simple carbohydrates) – Large amounts of sugary, high-calorie foods (regular soda, candy, sweets) may slow your weight loss or cause weight gain
  • Choose complex carbohydrates (whole grains, fruits, vegetables) instead – These foods are a part of any healthy diet and are even more important for peoples who have had their ability to intake food reduced such as duodenal switch surgery patients