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AFTER GASTRIC SLEEVE SURGERY DIET

You’ve made it past surgery and you’re on your way to a healthier life. You may think it’s clear sailing from here. Unfortunately, the hard part is just beginning.

Now is not the time to cheat. While the two week diet was important reduce your risk of surgical (intraoperative) complication, the week 1 to 4 post-op diet will help prevent post-op complications.

The first few weeks after surgery, you will experience frequent irritability and it’s not uncommon to second guess your decision to have surgery.

The very extreme diet after your sleeve gastrectomy may seem like your surgeon is being overly cautious. It is utterly important that you follow his or her instructions to the ‘T.’

Cheating on your post-op diet can cause diarrhea, dehydration, Constipation, bowel obstruction, or a very serious gastric leak. If you need more motivation to follow your post-op diet, this article will help.

Below is a typical diet after gastric sleeve surgery for weeks 1 to 4.

WEEK 1 – Clear Liquids ONLY

Glass of water.In week one you are limited to clear liquids only. This sounds tough. And it is tough. However, most patients have very little desire to eat. The hunger hormone ghrelin is almost non-existent after surgery.

The part of the stomach that produces the majority of ghrelin is removed during surgery.

Make sure all items listed below are sugar free.

You should avoid:

  • Carbonated beverages
  • Very sweet beverages
  • Sugar
  • Caffeine

WEEK 2 – FULL liquid diet WITH PROTEIN

Protein <a href=shake and shaker bottle." height="456" src="https://www.bariatricpal.com/applications/core/interface/imageproxy/imageproxy.php?img=https://obesitycoverag-wpengine.netdna-ssl.com/wp-content/uploads/2017/10/protein-shake.jpg&key=91af9b143cd0120192638b5955bb8716e18aa7687b25cf0d8a006992fe091307" style="border:0px;vertical-align:middle;" width="350" data-imageproxy-source="https://obesitycoverag-wpengine.netdna-ssl.com/wp-content/uploads/2017/10/protein-shake.jpg" />During week two you may start to feel some hunger pains. Continue to stick to your surgeon’s recommended diet. Your diet may include all items from week 1 plus:

  • Protein Powder mixed with a sugar free non-carbonated clear liquid.
  • Sugar free pudding.
  • Soup with soft noodles.
  • Non fat yogurt.
  • Carnation instant Breakfast. Look for the sugar free option.
  • Very thin creamed Soups. No chunks.
  • Sugar free sorbet.
  • Very watery hot oatmeal. Check the sugar content.
  • Diluted no-sugar added juice.
  • Sugar free, nonfat ice cream
  • Thinned applesauce. Check sugar content.

WEEK 3 – SOFT pureed FOODS

Week three after gastric sleeve surgery is tough. But the good news is that you can start adding some real food into your diet, albeit pureed.

You still need to be careful to limit sugars and fats. The goals for week 3 include:

  • Get your 60 grams of Protein per day
  • Eat slowly
  • Introduce new foods one by one.

Scrambled eggs.Food may taste differently and will be tolerated differently than they were before surgery. You may find that dairy is harder to digest. It’s recommended that you introduce new foods slowly.

Give your body some time to react to each new food. By doing this you’ll be able to identify foods that are causing gas, stomach upset, and/or diarrhea.

The foods listed below are typically acceptable for week three after surgery.

  • 1 Protein Shake per day. You can now blend them with yogurt or non-fat milk.
  • Almond milk or coconut milk makes a great protein shake.
  • Hummus
  • Cottage cheese (low fat)
  • Soft cereals – Let your Cereal sit in the non-fat milk until it’s soft.
  • Soft vegetables – steam or boil them until they are soft.
  • Soft cheeses – limit these, they are typically high in fat.
  • Ground chicken or beef. Add some beef or chicken stock to keep the meat soft.
  • Soups
  • Scrambled eggs – these are a great source of protein.
  • Soft (steamed) fish. Remember to chew well.
  • Canned tuna and salmon (you can add low fat mayo). Great source of protein.
  • Mashed fruit. Bananas, avocados, and canned fruit (watch sugar content).

You should avoid the following foods:

  • While smoothies are ok, limit their sugar content.
  • Sugar
  • Starchy foods like Pasta, rice and bread.< /strong>
  • Fibrous vegetables like celery, broccoli, asparagus, raw leafy greens.

WEEK 4 – INTRODUCING FOODS!

You’ve followed your diet up to week four. Now it’s time to start introducing real foods.

Your sleeve and stomach are still sensitive, so go slow and remember to chew each bite thoroughly. You’re done with pureed foods, but you should continue to look for softer versions of food during this week.

  • Tuna fish.Continue your daily Protein Shakes
  • Introduce chicken and beef very slowly. Ensure you chew thoroughly.
  • Any type of fish.
  • Fruits
  • Vegetables (it’s still recommended that you cook these to soften them a bit).
  • Sweet Potatoes
  • Mashed and baked potatoes.
  • Cereal
  • Caffeine can be introduced. It’s recommended that you limit this.

You should avoid the following foods in week four:

  • Sodas
  • Fried foods
  • Fibrous vegetables (i.e. celery and asparagus)
  • Sugary drinks
  • candy
  • Dessert
  • pastas and other high carbohydrate, low nutrient foods (pizza).
  • Whole milk and other whole milk dairy foods.
  • Nuts

WEEK 4 HEALTHY SNACKS

While it is recommended that you only eat 3 small meals each day and hydrate in-between meals, you may need a small healthy snack. If your surgeon approves this, the items below make healthy Snacks.

  • Hummus with rice crackers or softened (boiled and cooled) baby carrots.
  • Hard boiled egg.
  • Quarter cup of oatmeal.
  • Quarter of a baked sweet potato (or microwaved)
  • banana
  • Strawberries or fresh fruit.

WEEK 5 AND BEYOND

Gastric sleeve food pyramid.Continue to introduce foods one by one to see how well they are tolerated. Watch out for constipation, diarrhea, and upset stomach.

  • Eat three small meals every day.
  • Hydrate throughout the day.
  • Stop drinking fluids 30 minutes before each meal.
  • Avoid snacking. If you do, choose a nutrient-dense food (fruit, vegetable, nuts).
  • Take your recommended daily Vitamins.
  • Ensure you get 60 grams of protein.
  • Supplement daily with a protein shake.
  • Incorporate exercise into your daily routine. Make it a habit.
  • Avoid sodas.
  • Prepare for bad days. How will you cope when you are in a difficult situation?
  • Find an accountability partner. Go to a support group and make friends that you can call.

6 TIPS – HEALTHY EATING AFTER GASTRIC SLEEVE SURGERY

  1. Choose foods that are nutrient dense. Bread is not nutrient dense. An apple, banana, fish, etc. are nutrient dense foods.
  2. Do not drink your calories. It won’t fill you up and most caloric drinks are filled with sugar.
  3. Expect an emotional roller-coaster. Don’t let food be your comfort. Create a plan.
  4. Chew your food thoroughly and take your time eating.
  5. Plan what you will eat if you’re going out. Ask for half the portion size at restaurants. You may get a discount and you won’t be tempted to overeat.
  6. Make water your new best friend. Drink it regularly throughout the day. Buy a reusable 64 oz bottle that you can carry to work with you. Make sure you finish the entire bottle each day. But remember not to drink with meals (this helps prevent stretching your pouch).

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    • LeighaTR

      Four days post surgery. I am sipping as fast as I can and getting NO WHERE near the goal of 60 - 80 grams of protein or the 64 oz of liquids. I just feel FULL. I don't know if it can still be the gas build up (I would think by now that would be gone) but it is a struggle to drink. And so far I have not had the nausea or spasms and don't want to wander into that territory by pushing too hard with liquids. I about passed out today as it was my most "strenuous" day. Went from second story to basement for shower and I was sure I was going to pass out. Looking back on my last few days I have had a total of less than 1000 calories. Am I just not getting enough nourishment in me? Once again a friday where I can't get ahold of the doc until Monday rolls back around so I am hoping maybe someone here has some experience on how to keep energy going. I do have fibromyalgia too and that may be where some added fatigue comes into play. How did you all fair with the goals the week after surgery?
      · 0 replies
      1. This update has no replies.
    • Doughgurl

      2 days until I fly out to San Diego to have my Bypass Surg. in Tiajuana Mexico. Not gonna lie, the nerves are starting to surface. I don't fear the surgery itself, or the fact that I'm traveling alone, but its the aftermath that I'm stressing about the most, after this 8 week wait. I'm excited to finally be here, but I am really dreading the post surgical chapter. I know its going to be tough, real tough and I think I'm just in my head to much now that the day i here. Wish me luck, Hopefully I'm one of the lucky ones, and everything goes smoothly. Cant wait to give an exciting update,. If there is anyone else have a June bypass or even a recent one, Id love to have someone to compare war stories with. Also, anyone near San Antonio Tx? See ya soon with the future me. 💜
      · 3 replies
      1. Phil Penn

        Good Luck this procedure is well worth it I am down to 249.6 lb please continue with the process..

      2. Selina333

        I'm in Houston so kind of near you and had the sleeve in Dec. Down 61 lbs. Feeling better. Was definitely worth it. I hope the everything is going well for you. Update us when you can!

      3. Doughgurl

        I am back home after my bypass surgery in Tiajuana. I'm post op day 4. Everything went great! I guess I'm one of the lucky ones who have not encountered much pain at all, no nausea thus far and I'm having no problem keeping down broths and water. Thank you for your well wishes. I cant wait to keep up this journey and have a chance at better health and simply better quality of life. I know there will be bumps in the road ahead, and everything won't be peaches and cream, but at least I have a great start so far. 😍

    • LeighaTR

      I am new here today... and only two weeks out from my sleeve surgery on the 23rd. I am amazed I have kept my calories down to 467 today so far... that leaves me almost 750 left for dinner and maybe a snack. This is going to be tough for two weeks... but I have to believe I can do it!
      · 0 replies
      1. This update has no replies.
    • Doughgurl

      Hey everyone. I'm new here so I thought I should introduce myself. I am 53y/o and am scheduled for Gastric Bypass on June 25th, 2025. I'm located in San Antonio, Texas. I will be having my surgery in Tiajuana Mexico. I've wanted this for years, but I always had insurance where bariatric procedures were excluded. Finally I am able to afford to pay out of pocket.  I can't wait to get started, and I hope I'm prepared for the initial period of "hell". I know what I have signed up for, but I'm sure the good to come will out way the temporary period of discomfort and feelings of regret. I'd love to find people to talk to who have been through the same procedure or experience before. So I look forward to meeting you all. Hope you have a great week!
      · 2 replies
      1. Selina333

        I'm so happy for you! You are about to change your life. I was so glad to get the sleeve done in Dec. I didn't have feelings of regret overall. And I'm down almost 60 lbs. I do feel a little sad at restaurants. I can barely eat half a kid's meal. I get adults meals often because kid ones don't have the same offerings at times. Then I feel obligated to eat on that until it's gone and that can be days. So the restaurant thing isn't great for me. All the rest is fine by me! I love feeling full with very little. I do wish I could drink when eating. And will sip at the end. Just a strong habit to stop. But I'm working on it! You will do fine! Just keep focused on your desire to be different. Not better or worse. But different. I am happy both ways but my low back doesn't like me that heavy. So I listened (also my feet!). LOL! Update us on your journey! I'm not far from you. I'm in Houston. Good luck and I hope it all goes smoothly! Would love to see pics of the town you go to for this. I've never been there. Neat you will be traveling for this! Enjoy the journey. Take it one day at a time. Sometimes a few hours at a time. Follow all recommendations as best you can. 💗

      2. Doughgurl

        Thank you so much for your well wishes. I am hoping that everything goes easy for me as well. We don't eat out much as it is, so it wont be too bad in that department. Thankfully. Also, I hear you regarding your back and feet!! I'd like to add knees to the list. Killing me as we speak! I'm only 5' so the weight has to go. Too short to carry all this weight. Menopause really did a doosey on me. (😶lol) My daughter also lives in Houston. with her Husband and my 5 grand-littles. I grew up in Beaumont, so I know Houston well, I will be sure to keep in touch and update you on my journey. I may need some advice in the future, or just motivation. Thank You so much for reaching out, I was hoping to connect with someone in the community. I really appreciate it. 💜

    • Alisa_S

      On day 4 of the 2 week liquid pre-op diet. Surgery scheduled for June 11th.
      Soooo I am coming to a realization
      of something and I'm not sure what to do about it. For years the only thing I've enjoyed is eating. We rarely do anything or go anywhere and if we do it always includes food. Family comes over? Big family dinner! Go camping? Food! Take a short ride or trip? Food! Holiday? Food! Go out of town for a Dr appointment? Food! When we go to a new town we don't look for any attractions, we look for restaurants we haven't been to. Heck, I look forward to getting off work because that means it's almost supper time. Now that I'm drinking these pre-op shakes for breakfast, lunch, and supper I have nothing to look forward to.  And once I have surgery on June 11th it'll be more of the same shakes. Even after pureed stage, soft food stage, and finally regular food stage, it's going to be a drastic change for the rest of my life. I'm giving up the one thing that really brings me joy. Eating. How do you cope with that? What do you do to fill that void? Wow. Now I'm sad.
      · 1 reply
      1. LeighaTR

        I hope your surgery on Wednesday goes well. You will be able to do all sorts of new things as you find your new normal after surgery. I don't know this from experience yet, but I am seeing a lot of positive things from people who have had it done. Best of luck!

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