Bariatric Surgery Pre and Post Op Diet for Weight Loss Surgery (2022)

Medically reviewed by Abbey Sharp, Registered Dietitian (RD), BASc.

In part one of this series on bariatric surgery, we discuss the common types of weight loss surgery, their pros and cons and discuss the pre and post-surgery diet and lifestyle changes.

The following blog post is an introduction to bariatric surgery to set the stage for my follow up blog post on the risks and potential benefits of surgery. This is not intended to be a promotion of weight loss surgery and does not reflect any of my personal or professional opinions on it as a dietitian.

Bariatric Surgery Pre and Post Op Diet for Weight Loss Surgery (1)

What is Bariatric Surgery?

Bariatric surgery, also known as weight loss surgery or gastric surgery, involves making changes to the digestive system to help with weight loss. Bariatric surgery is the last resort when a person is unable to lose weight through other methods like dietary changes and exercise. The goal of bariatric surgery is to lose excess weight to reduce a person’s risk of medical problems associated with “obesity”.

Bariatric surgery achieves weight loss in two ways:

  1. Restriction

Bariatric surgery is used to physically limit the amount of food the stomach can hold, which limits the number of calories you can eat.

  1. Malabsorption

Bariatric surgery is used to shorten or bypass parts of the small intestine, which reduces the amount of calories and nutrients the body absorbs.

Who is a Candidate for Bariatric Surgery?

A person must meet a certain criteria to be eligible for any weight loss surgery.

This may vary slightly from clinic to clinic but typically, a person can be a candidate for bariatric surgery if:

  1. Their BMI is equal to or greater than 40 or they are more than 100 pounds overweight
  2. Their BMI is equal to or greater than 35 and have at least one or more obesity-related co-morbidities (Type 2 diabetes, hypertension, sleep apnea, non-alcoholic fatty liver disease, osteoarthritis, gastrointestinal disorders, heart disease)

Bariatric Surgery Pre and Post Op Diet for Weight Loss Surgery (2)

(Video) Pre and Post Op Diet Plan for Bariatric Surgery - Jacie Slocum

Four Common Types of Bariatric Surgeries

There are four common types of weight loss surgeries and within that list, there are a few that are more popular than others because of their weight loss outcomes and complication rates.

Roux-en-Y Gastric Bypass


to the International Federation for the Surgery of Obesity and Metabolic Diseases (IFSO) the Roux-en-Y Gastric Bypass (RYGB) is the most commonly performed procedures. In a RYGB operation, the surgeon separates the upper portion of the stomach from the lower portion. The upper portion of the stomach becomes a small pouch which is the only part of the stomach that receives food. This new stomach pouch limits the amount of foods that you can comfortably eat and drink at one time, so you eat less. Once the small pouch is created, the surgeon then reroutes the digestive system to bypass the larger part of the stomach and instead is connected to the new pouch. Food will then flow directly from the pouch into this new part of the intestine. Because food now bypasses a portion of the small intestine, fewer nutrients and calories are absorbed resulting in your body taking in a lot less energy.

Advantages & Disadvantages of Roux-en-Y Gastric Bypass

The advantages of the RYGB is that it typically provides 60-80% excess weight loss and greater than 50% of excess weight loss is maintained in the long term. The disadvantages of RYGB is that it may result in greater complication rates and can lead to long term vitamin and mineral deficiencies.

Laparoscopic Adjustable Gastric Banding

In this operation, also known as Lap Band, the surgeon wraps a small adjustable silicone rubber band around the upper portion of the stomach. The band decreases the functional size of the stomach, turning it into an hourglass shape. The food you eat quickly fills the pouch and then empties very slowly through the constriction created by the band, just like sand passing through an hourglass. An access port is placed under the skin of the abdomen, where a tube connects the port to the band. A few weeks after surgery, the surgeon will inject saline through the port to inflate the lap band or will remove the fluid to deflate the lap band depending on what’s needed. The gastric band basically restricts the amount of food your body can hold so you feel full sooner. Contrary to the RYGB operation, the Lap Band surgery does not interfere with the digestive system so it does not reduce the absorption of calories and nutrients.

Advantages & Disadvantages of Laparoscopic Adjustable Gastric Banding

The advantages of Lap Band is that it induces excess weight loss of 40-50 %, requires no cutting of the stomach or rerouting of the intestines, it’s reversible, has the lowest rates of postoperative complications and has the lowest risk of vitamin and mineral deficiencies. The disadvantages of Lap Band is that some patients fail to lose at least 50% of excess weight and this procedure has the highest rate of re-operation because of the band slipping or eroding in the stomach.

Bariatric Surgery Pre and Post Op Diet for Weight Loss Surgery (3)

Sleeve Gastrectomy


to the International Federation for the Surgery of Obesity and Metabolic Diseases, Sleeve Gastrectomy is the second most commonly performed procedures. In this procedure, a surgeon removes a portion of the stomach, making it roughly the size and shape of a banana. This surgery is seen as a more simpler version of RYGB because it doesn’t involved rerouting or reconnecting the intestines. Since the new banana shaped stomach is a lot smaller, it can’t hold as much food. The surgery also removes the portion of the stomach that produces the hormone, ghrelin, which reduces your desired to eat.

Advantages & Disadvantages of Sleeve Gastrectomy

The advantages of Sleeve Gastrectomy is that it induces rapid and significant weight loss similar to RYGB and greater than 50% of excess weight loss is usually maintained. The disadvantages of Sleeve Gastrectomy is that it’s non-reversible, has higher early complications rate and long term vitamin and mineral deficiencies.

Biliopancreatic Diversion with Duodenal Switch

This last procedure, also known as the “Duodenal Switch” or “The Switch” is the least common weight loss procedure. This surgery is only performed on people who are seen as severely “obese”, meaning they have a BMI of 50 or higher and haven’t been able to lose weight any other way. In this operation, the surgeon removes one half of the stomach. However, the valve that releases food to the small intestine remains, along with a limited portion of the small intestine that connects to the stomach (the duodenum). Then, the surgeon bypasses the majority of the intestine by connecting the end portion of the intestine to the duodenum near the stomach. This procedure does two things. It limits how much you can eat because of the small stomach size and it reduces the absorption of nutrients because a huge portion of the small intestine is bypassed.

(Video) The Bariatric Surgery Program Pre-Operative Liquid Diet

Advantages & Disadvantages of Biliopancreatic Diversion

The advantages of the duodenal switch is that it results in 60-70% excess weight loss and causes changes in gut hormones to reduce appetite and improve satiety. The disadvantages of the duodenal switch is that it has the highest complication rates and risk for mortality compared to all other bariatric surgeries. Also, it has the greatest potential to cause protein, vitamin and mineral deficiencies.

Pre-Operative Dietary & Lifestyle Changes for Weight Loss Surgery

Weight Loss

In most cases, patients must lose some weight before their surgery to reduce the amount of fat in and around the liver and abdomen to prevent complications. If enough weight is not lost before a patient’s surgery, the procedure may be cancelled or postponed. A large scale study found that weight loss of 9.5% before RYGB was associated with a marked reduction in postoperative complications like leakage or infections. Weight loss before surgery has even been shown to shorten the time of the actual surgery. Losing weight prior to surgery is thought to not only improves surgery outcome, but also to prepare the patient for the new way of eating after surgery.

Establish New Dietary Habits

Bariatric Surgery Pre and Post Op Diet for Weight Loss Surgery (4)

To prepare for a patient’s postoperative diet, patients must learn new eating techniques because of structural changes made to their digestive system. There is still no consensus on the duration and the macronutrient distribution of a preoperative diet. Some research has found a low carbohydrate diet is more effective than a low fat diet for short term weight loss, improved insulin sensitivity and a reduction in lipid concentrations, but it is generally a very individual thing.

A common preoperative diet is a very low calorie diet which is approximately 450-800 kcal/day (EEK, that’s dangerously low). Not surprisingly, this very low calorie diet has been associated with a 10% preoperative weight loss, a 9% reduction in BMI and a 15-20% reduction in liver volume. Studies have also shown it to be effective at improving cardiovascular risk factors. However, research also cautions the use of a very low calorie diet for a long period of time because it may induce a catabolic state which could worsen recovery after surgery. There is also a concern that it may permanently damage metabolism, as all low calorie diets and rapid weight loss can do.

According to the American Society for Metabolic and Bariatric Surgery, a preoperative diet should last no more than three months to maintain high compliance rates among patients. While research has seen the benefits of short term weight loss before surgery, there is still not much evidence on the long term outcomes or risks. We can, however, extrapolate it from the general population and assume that there are many serious risks.

Post-Operative Dietary Changes

Stage 1 – Liquid Diet

For the first week, patients are put on a liquid diet where they’re only allowed to drink a few ounces of clear liquids at a time. Some of these liquids include fruit juice, broths, coffee/tea and flavoured water. Fluid is especially important after surgery for the recovery process because dehydration is one of the most common reasons for patient’s re-admission after surgery.

Stage 2 – Full Fluids

After that, patients must follow a full fluids diet which includes foods like low fat cream soup, Greek style yogurt, pureed vegetable soup, apple sauce, tomato and vegetable juice, cream of rice hot cereal and oatmeal.

Bariatric Surgery Pre and Post Op Diet for Weight Loss Surgery (5)

Stage 3 – Soft/Regular Diet

Once it’s been one month, patients can start to slowly introduce solids into their diet. It’s important patients keep solids and liquids separate and to always include one protein-rich food serving at each meal and snack. It’s recommended to avoid red meat for the first six months after surgery. It’s also recommended to avoid all raw vegetables for the first three months after surgery. Instead you have to remove the skin and cook vegetables. All fruits should be peeled, cored, baked and pitted.

Stage 4 – Maintenance Diet

This is the final phase of the postoperative diet which is designed to help patients maintain their weight once their weight loss goal is achieved. It’s recommended to drink 1.5-2 liters, eat three small meals and snacks a day and get around 60-80 grams of protein per day for prevent lean muscle loss and protein deficiency.

(Video) Bariatric Surgery Full Liquid Diet

Other Post-Op Dietary Strategies for Bariatric Surgery Patients

Small Meals and Snacks

To prevent overfilling the stomach pouches, patients can only handle a small amount of food at a time, so it’s recommended they have three small meals and three small snacks a day.

Keep Fluids and Solids Separate

After surgery, patients can’t drink water or fluids at the same time as eating food because it can cause nausea or discomfort. Water and fluids should be avoided for 30 minutes before and after your meal or snack.

Eat Slowly and Chew Thoroughly

To aid in digestion, patients should take small bites and chew each food fully before swallowing.

Choose Low Fat, Low Sugar Foods and Fluids

Patients must avoid foods high in sugar and/or fat because these may cause dumping syndrome (we’ll discuss dumping syndrome in a bit). They’re also generally avoided because they’re high in calories and low in nutrients which can hinder their weight loss goal.

Vitamins & Minerals Supplementations

Depending on the surgery, most patients must take a lifelong daily supplement to prevent vitamin and mineral deficiencies (we’ll discuss this in part two). It’s recommended that patients take a multivitamin and/or other specific vitamins or minerals and get routine blood tests to assess for serious nutritional deficiencies.

Bariatric Surgery Pre and Post Op Diet for Weight Loss Surgery (6)

Medication Adjustments

Many patients that get bariatric surgery are already living with severe health problems like diabetes, hypertension and/or high blood pressure, so they may require certain medications to manage their condition. After surgery, these drugs may be absorbed differently, depending on the bariatric procedure. Sleeve Gastrectomy and Lap Band surgery usually do not affect absorption, while RYGB and Duodenal Switch result in major changes in absorption. Because of these changes, some medication may need to be taken differently (crushed, injectable or chewable) or their dosages may be changed.


Once a patient is fully recovered, it is recommended that they start to slowly incorporate physical activity into their lifestyle. It is recommended they get 150 minutes of moderate activity each week in the form of aerobic and resistance exercise.

Mental Health

Bariatric surgery is considered a major surgery and can have a significant impact on a person’s mental health. While some patients feel more confident in their body, others have difficulty adjusting to the dietary changes and the rapid change in appearance. To mitigate this risk, patients must meet with a psychiatrist or psychologist before surgery and after, if necessary.

Bariatric Surgery Pre and Post Op Diet for Weight Loss Surgery (7)

Concluding thoughts on Bariatric Surgery

As you can see, bariatric surgery is seen as an invasive, often permanent, weight loss surgery that requires significant changes to a person’s diet and lifestyle. It is not a quick fix and it is not without serious (often life threatening) risks. This is not to discourage or shame you from wanting to go down this road, but I do believe that knowledge is power and it’s important to understand everything involved before embarking on such a huge life change. Now that you have a comprehensive understanding of common weight loss surgeries and the strategies for preparing and recovering after surgery, be sure to check out part two of this post where we discuss the potential dangers and long term consequences of bariatric surgeries in more detail.

(Video) Pre-op diet before your VSG | Gastric Sleeve Surgery | Questions and Answers

Contribution By: Sofia Tsalamlal, RD

Bariatric Surgery Pre and Post Op Diet for Weight Loss Surgery (8)

Updated on August 13th, 2020

Bariatric Surgery Pre and Post Op Diet for Weight Loss Surgery (9)

Abbey Sharp

Abbey Sharpis a Registered Dietitian (RD), regulated by theOntario College of Dietitians. She is a mom,YouTuber,Blogger,award winningcookbook author,media coachspecializing in food and nutrition influencers, and a frequent contributor to national publications likeHealthlineand on national broadcastTV shows.

(Video) Cheated on Bariatric Diet ? | Pre & Post Bariatric Surgery | Mexico Bariatric Services


What does the bariatric pre-op diet consist of? ›

The pre-op diet largely consists of protein shakes and other high-protein, low-calorie foods that are easy to digest. Protein helps bolster and protect muscle tissue. This can help your body burn fat instead of muscle for fuel. Protein also helps keep your body strong, which can speed up recovery.

What is the 2 week pre-op diet gastric sleeve? ›

The pre-op liquid diet will consist of approved protein shakes, sugar-free beverages, sugar-free gelatin, sugar-free popsicles, and broth. We always recommend that our patients consume five protein shakes a day and consume at least 64 ounces of sugar-free liquids.

What is the prep for weight-loss surgery? ›

How to prepare for weight loss surgery: Begin and maintain a workout routine to reach and keep your weight loss goals. Lower your daily calories to a range between 1200-1500 calories (or in a range discussed with your doctor). Avoid consuming caffeinated beverages approximately one month prior to surgery.

How much weight will I lose on bariatric pre-op diet? ›

Typically, most patients will lose around 10 to 15 pounds while on the pre-op diet. It helps to jump-start your future diet and lifestyle as you get used to eating more low carbohydrates, fat, and calories and high in protein, vitamins, and nutrients.

What foods Cannot be eaten after bariatric surgery? ›

Eight foods to avoid after bariatric surgery
  • 1) Food with Empty Calories. ...
  • 2) Alcohol. ...
  • 3) Dry Foods. ...
  • 4) Bread, Rice, and Pasta. ...
  • 5) Fibrous Fruits and Vegetables. ...
  • 6) High-Fat Food. ...
  • 7) Sugary and Highly Caffeinated Drinks. ...
  • 8) Tough Meats.

Can you have eggs on pre op diet? ›

During this stage, patients eat soft proteins like eggs, yogurt, tuna, and cottage cheese for about two weeks. Altogether, it takes about five-weeks before patients are able to eat solid protein again without the risks associated with vomiting or stretching the stomach.

How painful is gastric sleeve surgery? ›

Typically, people report pain in the range of 5/10 with some people's pain getting up to a 7/10. Your doctor should have given you instructions regarding pain at this point as well. If the pain is unbearable or not what your surgeon told you to expect, you should let your surgeon know.

How can I speed up weight loss after gastric sleeve? ›

With the right habits, you can lose 60-70% of your excess weight within a year.
  1. Choose nutrient-dense foods. You don't have a lot of room in your stomach after surgery, so don't fill up on empty calories. ...
  2. Protein, protein, protein. ...
  3. Plan your meals. ...
  4. Stay away from beverage calories. ...
  5. Chew thoroughly. ...
  6. Exercise.

When can I eat mashed potatoes after gastric sleeve? ›

After surgery
Time since surgeryRestrictions
1–2 weeksMove to pureed or mashed foods
2 weeksAdd soft foods and crackers to the diet
1 monthIntroduce solid foods
2 monthsResume regular, balanced diet consisting of solid foods
2 more rows

What can you not do before bariatric surgery? ›

Bariatric surgery is just one component of a major lifestyle change.
Other lifestyle changes you'll want to make before bariatric surgery include:
  • Smoking cessation.
  • Limiting or stopping your alcohol intake.
  • Small amounts of exercise.
  • Taking a multivitamin.
  • Changing your eating habits.
22 Feb 2018

How do I prepare my body for gastric sleeve surgery? ›

Two or three days before surgery you'll need to switch to an all-liquid diet. Restrict your food intake to water, broth, gelatins, and low-calorie sports drinks (no sodas). You'll need to cut out consumption entirely starting at midnight on the day of your surgery – even water.

Why do you have to pee before bariatric surgery? ›

Testing can also help to ensure that a person is not using any drugs which may impair their lung function and put them at higher risk for complications while under anesthesia. It can also help to determine if a person is likely to abuse medications or painkillers that they are prescribed during recovery.

How much weight can you lose in 2 week pre op liquid diet? ›

Using this diet, you should be able to lose 5 – 10 pounds during the two weeks leading up to your operation. 1. Drink at least 64 ounces (2 quarts) of fluid per day. Drink non-carbonated sugar-free, calorie-free beverages.

How quickly do you lose weight after bariatric surgery? ›

The amount of weight loss will depend on the person and the procedure. But it tends to be rapid in the first few months. During the first 30 days after bariatric surgery, the average weight loss is 5 to 15 pounds per week. Men tend to lose weight at a faster pace than women.

How much weight do you lose the first month after gastric sleeve? ›

Going a step further, most patients lose 10-15% percent of their excess body weight the first-month post gastric sleeve.

When can you shower after bariatric surgery? ›

You can shower 48 hours after your surgery, but you must wait 1 week before you are able to soak in a bathtub. Gently pat your incision dry when it gets wet after bathing. How do I care for my wound? Bandages are placed on the little incisions the doctor made.

What can I eat for breakfast after bariatric surgery? ›

For weight loss surgery patients, a good breakfast should include a lean protein, such as an egg white or a fat-free dairy product, a vegetable and a small amount of fruit or a whole grain.

What happens first week after gastric bypass? ›

You may be nauseated or experience vomiting the first weeks after surgery. To control these side effects, maintain your fluid intake by taking small, frequent sips of water. Drinking 1.5 to 2 liters of water daily is recommended.

What should I eat the week before surgery? ›

The best meals before surgery will include a balance of lean protein, unprocessed carbohydrates, vegetables, and healthy (mainly plant-based) fats. Lean protein sources could include eggs, chicken, and fish. You can add a range of healthy carbohydrates like bananas, buckwheat, quinoa, sweet potatoes, and more.

Can I have cheese pre op gastric sleeve? ›

Cheese/Dairy All cheeses are acceptable including cottage cheese and farmer's cheese. Yogurt and milk in 8 oz. quantities can be consumed once per day. Salad Vegetables This is a long list of items.

How long does liquid stay in your stomach after gastric sleeve? ›

Stage 2: Full Liquids

You can advance to stage two of your diet after about 4-5 days and after you have been able to tolerate 48 ounces of clear liquids a day. This stage will involve foods that are mushy or have a consistency similar to yogurt, and will continue for about 7-10 days.

Why is divorce rate so high after bariatric surgery? ›

Increased incidence of divorce and separation after bariatric surgery might be associated with increased tension in already vulnerable relationships or to improvements that empower patients to leave unhealthy relationships.

Do you have a drain tube after gastric sleeve surgery? ›

Will the doctor leave in a drain after surgery? Most patients will have a small tube to allow drainage of any accumulated fluids from the abdomen. This is a safety measure, and it is usually removed before you are discharged from the hospital.

What is the most common complication of bariatric surgery? ›

An anastomotic leak is the most dreaded complication of any bariatric procedure because it increases overall morbidity to 61% and mortality to 15%.

How much weight should I have lost 2 months after gastric sleeve? ›

While no two cases are the same and several factors contribute to the success of your gastric sleeve surgery, on average, you will probably lose 8 to 12 pounds per month.

What foods are off limits after gastric sleeve? ›

Foods to Avoid After Bariatric Surgery
  • Red meat that's tough or dry.
  • Greasy, high fat foods.
  • Heavily seasoned or spicy foods.
  • Sugar alcohols, such as erythritol, glycerol, mannitol, sorbitol and xylitol.
  • Foods reheated in the microwave.
4 Mar 2022

How long does the 3 week stall last after gastric sleeve? ›

This stall may appear earlier or later than 3 weeks post-op and may last a few days to over a week in time. No matter what, it is crucial to ensure that the guidelines given by the surgeons office continue to be followed.

What should I wear after gastric sleeve surgery? ›

Take your most comfortable pajamas with you. Comfortable clothes. Pants and big t-shirts are good choices. Bath robe and slippers.

Is it normal to be hungry every 2 hours after gastric sleeve? ›

Having hunger eventually after any bariatric surgery is normal. The key is that most people will feel full with much less food. So, you hopefully will feel some fullness as you advance to regular protein foods. Finally, get in to see your surgeon.

What kind of ice cream can you have after bariatric surgery? ›

sugar-free, nonfat frozen yogurt, ice cream, and sorbet. nonfat plain Greek yogurt. fruit juices with no pulp, diluted with water.

How long is the process to get weight loss surgery? ›

Weight loss surgery requires a commitment to lifestyle changes, including what you eat and how often you exercise. We help you set the groundwork, so you're mentally and physically prepared for life after bariatric surgery. The entire process, from consultation to surgery, generally takes about six months to complete.

What should I do 6 months before bariatric surgery? ›

6 to 12 Months Before Surgery

Ask your primary-care provider for a referral to an accredited bariatric-surgery program. Enroll in the bariatric-surgery program, attending all required classes and meetings. Start exercising three to five times a week for 25 to 30 minutes, with your doctor's clearance.

What do I need to take to the hospital for gastric bypass surgery? ›

Whether you have gastric bypass, lap band surgery, gastric sleeve surgery, or duodenal switch surgery the items below are highly recommended.
  • Chapstick and Lotion. ...
  • Comfy Clothes. ...
  • Cell phone and iPad or Kindle Fire. ...
  • Slippers Or Socks with Tread. ...
  • Mouthwash or Breath Spray. ...
  • Your Favorite Pillow. ...
  • Room Fragrance.
5 Oct 2017

What should I do the night before gastric sleeve surgery? ›

On the night before surgery, take a long shower or bath and clean your abdomen 3 to 4 times with soap and water. Pay special attention to cleaning your belly button area-use a q-tip. DO NOT EAT OR DRINK ANYTHING AFTER MIDNIGHT on the evening before surgery.

How long are you under anesthesia for gastric sleeve? ›

How long does the procedure take? Gastric sleeve surgery typically takes around one hour to complete and is performed under general anesthesia. You may need to stay in the hospital for two to three days following the procedure.

How long does gastric sleeve surgery take? ›

The procedure itself takes about two hours. It is performed laparoscopically, so it requires only small incisions. Gastric sleeve patients typically remain in the hospital an average of one to two days.

What blood tests are done before bariatric surgery? ›

What are the routine tests before surgery?
  • A complete blood count.
  • Urinalysis.
  • Chemistry panel.
  • Gallbladder ultrasound.
1 Jun 2018

Why do you get drunk faster after bariatric surgery? ›

Research shows that blood alcohol levels peak higher and faster and take longer to return to normal due to altered metabolism after gastric bypass surgery. In addition, many post-surgical patients consume less food when they're drinking alcohol, which contributes to expedited absorption of alcohol in the blood stream.

Do they drug test you for a gastric sleeve? ›

You also will be required to pass a drug screening before your surgery. If you have used recreational drugs or abused prescription medications one time per month or less within the past year, you will be required to pass a drug screening before your surgery.

What are 3 common long term complications of gastric bypass? ›

Longer term risks and complications of gastric bypass can include: Bowel obstruction. Dumping syndrome, causing diarrhea, nausea or vomiting. Gallstones.
  • Excessive bleeding.
  • Infection.
  • Adverse reactions to anesthesia.
  • Blood clots.
  • Lung or breathing problems.
  • Leaks in your gastrointestinal system.
25 Jun 2022

Can you ever eat normally after gastric sleeve? ›

You can usually start eating regular foods about three months after surgery. At each stage of the gastric bypass diet, you must be careful to: Drink 64 ounces of fluid a day, to avoid dehydration. Sip liquids between meals, not with meals.

Can I drink Coke Zero after gastric sleeve? ›

Can I drink soda after undergoing gastric sleeve surgery? Technically you can drink soda after you have undergone a gastric sleeve surgery or any kind of bariatric procedure.

Can I have peanut butter after bariatric surgery? ›

The National Institutes of Health suggests avoiding foods with a sticky texture after gastric bypass surgery, including white rice and breads, over-cooked pasta, string cheese and peanut butter. These foods may cause pain or discomfort in some patients.


1. Weight Loss Surgery Diet: What to expect before and after
2. LIQUID DIET | Feeling Out of Energy with the Bariatric Surgery Pre-Op Diet
(Live Healthy MD)
3. Your Pre-Op Diet - How to eat just before weight loss surgery.
(Dr. Matthew Weiner)
4. Gastric Bypass Pre Op Diet Part 1! Days 1-10
(Tobias Young)
5. Pre-Op Diet for Weight Loss Surgery 🥛 What is it + Can you cheat? (Liquid / Protein Shake Diet)
(Bypass Blake)
6. Weight Loss Surgery Pre-Operation Diet
(UnityPoint Health - Des Moines)

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