The post-op diet is broken down into 4 phases after gastric sleeve surgery. Each phase should be followed for a minimum of 5-7 days. By following these helpful guidelines, you can expect more successful weight loss results, faster healing, and recovery. Here are the approved foods and beverages you can have after gastric sleeve surgery.
Phase 1: Clear Liquids
About a day after surgery, you can begin sipping clear liquids. Clear liquids include 100% real juices like apple, cranberry, or white grape (diluted 60/40 with water), sugar-free Jell-O, or broth.
Some examples of Acceptable Clear Liquids include:
- Water or sugar-free flavored water
- Herbal tea (decaf)
- Broth
- Sugar-free popsicles
- Sugar-Free Jello
- Gatorade Zero
Important Note: Make sure to drink 64 ounces of fluids every day. It can be difficult with a small stomach, so constantly sip throughout the day and keep track of fluid intake. Learning the signs and symptoms of dehydration is crucial to avoid dehydration.
It is encouraged to take small sips and be aware of when you feel full. When you can tolerate clear liquids and meet the 64 oz fluid goal, you can progress into phase 2, or the thick liquid phase.
Learn more about Clear Liquids After Gastric Sleeve
Phase 2: Thick Liquids
All foods consumed during phase 2 must be pureed in a blender and thinned enough to fit through a straw. However, do NOT use a straw in order to prevent gas and air from entering the stomach. The goal of this phase is to get 60-90 grams of protein daily.
It is encouraged to eat four to six meals of four ounces each slowly. It can take up to 30 minutes to eat 4 ounces or a half cup of food, so plan accordingly.
At least 64 oz of low-calorie, caffeine-free liquids should be consumed throughout the day to prevent dehydration and to help digestion. Sip these liquids between meals and never during meals, following the 30-minute drinking rule.
Some examples of Approved foods during phase 2 include:
- Unsweetened coconut, almond, or Lactaid free milk; some people become lactose intolerant after surgery
- Unsweetened applesauce
- Blended plain Greek yogurt; choose one that has more protein than sugar
- Cooked cereal with lactose-free milk (Cream of Wheat, grits, or oatmeal)
- Blenderized fruit added to shakes
- Blended soups
Avoid these foods during your post-op gastric sleeve experience:
- Sweets (cakes, cookies, ice cream, pies)
- Smoothies from chain restaurants
- Carbonated beverages
- Honey
- Sherbet
- Alcohol
- Pureed baby food
Learn more about Thick Liquids After Gastric Sleeve
Phase 3: Soft-Solid Food
About two weeks after bariatric surgery, you can advance to phase three if you didn’t experience nausea or vomiting in the previous phases. Focus on protein first when eating and avoid any foods that are fattening and high in calories. These can be difficult to digest. Cut down to three meals and one protein shake during this phase instead of the four to six small meals.
Introduce one new food at a time, that way, if something doesn’t agree with you, you will know what it is.
Some acceptable foods include:
- Casseroles (no heavy cream or mayo)
- Cooked eggs (without butter)
- Cottage cheese
- Soft lean meat like fish or canned chicken; meats you can mash with a fork (no red meat)
- Cooked vegetables
- Blended beans (kidney, lime, butter, pintos, or black)
- Canned fruit (in their juice or water, not syrup)
- Hot cereals
- Plain Greek yogurt
- Soft fish
- Soft cheese (limited amounts only)
Meals should be no more than 6 ounces.
Avoid soft solids like:
- Red meat
- Nuts
- Popcorn
- Raw vegetables
- Fresh fruits
- High-calorie beverages
- Fibrous foods (which can cause a blockage)
Learn more about Soft Solids After Gastric Sleeve
Phase 4: Solid Foods
During this phase, one new food should be added at a time so you can gauge how you react to it.
Avoid bread as it tends to form gummy balls and can be difficult to digest.
Some suggested foods include:
- Fruits and vegetables
- Beans and legumes
- Lean meats
- Eggs
- Whole grain products, including quinoa, oatmeal, and cereals
Protein is crucial at this point and helps reduce hair loss. As the body adjusts to changes after surgery and rapid weight loss occurs, patients can experience weight loss three to six months after surgery.
Hair loss can also occur due to low zinc, iron, and protein levels.
Best Food Sources of Protein:
- Eggs
- Cottage cheese
- Low-sugar, high-protein Greek yogurt
- Low-fat cheese
- Fish
- Protein powders (Whey and Hemp)
- Chicken and turkey
- Legumes
- Other lean meats
- Soy products
Learn more about Protein After Gastric Sleeve
Foods to Avoid During All Phases
Avoid or limit to small amounts the following foods:
- Regular mayonnaise
- Sour cream
- Pie crust
- Cream cheese
- Hot dogs
- Margarine
- Granola
- Coleslaw
- Muffins
- Regular salad dressings
- Sauces
- Fried foods
- Doughnuts
- Gravy
- Regular sodas
- High sugar drinks
- Bacon
- Sausage
- Bologna
- Pasta
- Rice
How to Be Successful After Surgery
- Eat only when hungry: Listen to your body and know your hunger cues to prevent eating when you are not hungry.
- Chew slowly: Chewing slowly and to applesauce consistency can help you be aware of when you become full.
- Eat small portions: Your new stomach can only hold about 1/2 a cup of food so eat small portions not to stretch out your new pouch.
- Don’t overeat: Stop eating as soon as you feel satisfied. Continuously overeating will stretch your new stomach pouch.
- Avoid any fibrous food: This food can get stuck because it cannot be chewed well enough to break up into pieces.
Remember to take vitamins and supplements to avoid nutritional deficiency. Calcium, B12, iron, and a multivitamin are recommended to avoid nutritional deficiencies. All vitamins should be bariatric specific and in the form of soft chew, chewable, or drinkable, as are available at Emerge Bariatrics.
I had The gastric sleeve then 3 years later gastric bypass I have medical issues after and couldn’t get into an exercise routine because I was On bed rest only for 30 days . I lost Almost 70 pounds but I stopped eatting right all the time but most of the time I did . I Was ever hungry so I’d forget to eat. Then I guess I’d eat too much . And I’m on some meds that a side effect is weight gain . So I’m needing advice on my pouch reset and a good example of good meals for everyday people I’m also a southern girl . Can you help me get back on track?
Hi Sherry, I recommend you take a look at our macronutrient blog It has a macronutrient breakdown to follow after surgery as well as some sample meal plans you can follow. You can also try our 10 day pouch reset
I’m getting the gastric sleeve done soon and I am so excited about this. I lost 100 lbs when I was younger and kept it off til I started having kids. In 2020 I had covid and now I’m a long haul covid and I look at food and gain 10 lbs. So we are going through with this. I can’t wait.
I just had my surgery a week now. I have experienced severe pain afterwards. It has been unbearable!! I walk a lot inside to build strength and stomach muscle. Each day get a little better. Just enduring the pain
Make sure to get pain meds. I have my first visit on the 25th of April 2023. I am.excited to see the results. I am never hungry. I can barely drink liquids. But it’s all in the recovery. Good Luck!
5 days post op sleeve, tolerating liquids, Alr on premier protein shakes, and mashed potatoes 2 spoon full… gas pains are tough but over all good 😊… walk a lot! That helps and hot showers.
I’m happy to hear that you’re doing well post-op! Walking is very beneficial after surgery as well! We have a blog post about it if you’re interested in taking a look. :) https://mexicobariatriccenter.com/benefits-of-walking/
Hello my name is Sandra turlington and I’m getting the sleeves surgery what are some of things that I should avoid eating after the surgery
Hello Sandra! Here’s a link to our post-op diet to find out what kinds of foods or liquids to avoid: https://mexicobariatriccenter.com/bariatric-surgery-post-op-diet-guide/
I am one week in to the gastric sleeve I feel ok but I also feel hungry all the time anything you can recommend to me so I am not so hungry.
Hello Dana, our nutritionist here can help you out with your food related question. Please contact her at nutrition@mexicobariatriccenter.com
I am 90 days post gastric sleeve. I have lost 50 pounds and feel amazing. I am reading about these patients with pain and other issues and I feel for them but felt the need to let people know that sometimes it is not bad at all. I was off pain meds in 3 days, started walking day one. I followed the doctors direction to the letter. I still have a craving now and then but I drink some water and i am so full from that the cravings pass. Good luck to everyone on this journey
Hi Lori! Thank you for your feedback about your surgery experience and congrats on losing that 50 lbs! We are so proud of you :) If you have any questions, feel free to reach out! We are always here for you.
I have had no problems walking is the best thing and fallowing the rules lost 27 my surgery is month and half old
Congratulations on your weight loss Loretta!
Had my gastric sleeve surgery July 24, 2023. If could take away anything right now, it would be the side effects of constipation. Did anyone else experience this and if so, when will I have just a regular bowel movement without taking milk of magnesia every so many days. When I’m constipated, I have absolutely no appetite to eat 😩
Hi Donna, constipation is common in the months following surgery due to changes in diet. Somethings you can do to fight constipation include staying hydrated, eating lots of fiber, walking, and taking a probiotic and digestive enzyme.
My name is Anthony
I had surgery in June 27, 2023 have follow my diet accordingly to the doctor piece of paper. I have lost 152 pounds in the last five months starting was 375 on the day of the surgery has off today. Everything has changed for me. I cannot stand the smell of tuna fish or chicken. It was very hard for me to intake, food and water because I will throw it up I lived for the last four months nothing but liquid diet as in soups and eggs and lots of protein shakes close to 90 g of protein shakes a day.
My weight is 223 pounds.
I had the gastric sleeve done.
Hi Anthony, are you taking your vitamins? Some vitamin deficiencies can cause nausea and make it difficult to enjoy they things you used to. I recommend getting your vitamin levels check and taking a digestive enzyme when you eat. The digestive enzyme will help with digestion of foods that don’t settle well and it can help with nausea.