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Why sleeve and not bypass?



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For me the choice was easy. Here are my reasons for not choosing bypass:

  • I had a lower starting BMI with less than 100 pounds to lose, so felt I didn't need such a "drastic" surgery.
  • Hated the idea of my detached stomach and intestines still just sitting inside me where they could still develop ulcers, cancer, or God knows what else while no longer being accessible with a simple endoscopy.
  • Didn't like the idea of losing the use of my pyloric valve.
  • More disconnections and reconnections meant higher likelihood of leaks.
  • Potential for dumping syndrome.
  • Potential for malabsorption and vitamin/mineral deficiencies.

Bonus benefits of sleeve over RNY:

  • The stretchy part of your stomach (the fundus) is removed with sleeve, but only partially removed with RNY.
  • The part of your stomach that produces ghrelin (the hunger hormone) is removed with sleeve.

I want to emphasize that these are MY reasons. RNY is a hugely successful and proven solution and is a fantastic option for a lot of people. You should figure out what is most important to you and what you can live with long term, discuss your goals and concerns with your surgeon, and figure out what the best option for YOU is.

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I asked the same question to my surgeon and he did not make the recommendation for me, (thought he does for some based on their particular medical conditions). Instead, he lead me through the pros and cons of each procedure. For me, I was not full blown diabetic, (which can lead to a bypass decision) and I had 90-100 pounds to lose. Definitely no more. We finally decided that I didn't need the extra malabsorption (and the potentially more intense side effects) that comes with the bypass to be successful and went with the sleeve. I had some minor reflux, (which can also lead to a bypass over sleeve decision) but my doc attributed it to a hiatial hernia that would be repaired during either WLS procedure. I reached goal with no major issues 9 months after being sleeved and have settled into maintenance so I guess it was a good decision!

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With the sleeve you still have to take Vitamins everyday correct? So what's the difference between taking them with the sleeve and with bypass?

With sleeve you are sure to absorb the Vitamins you take. With bypass, you could potentially still not absorb the vitamins, even with supplements and have to resort to injections or other more extreme solutions. It's not about taking vitamins or not, it's about being confident you are getting the full benefit from them. Also I know a bypass patient who have to take more vitamins than I do, because she developed deficiencies in the fat soluble vitamins (E & K). So, while I do have to take vitamins everyday, I don't have to take as many as a bypass patient might potentially have to.

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I chose the sleeve for all the reasons listed including:

  • lower recovery time (2 weeks recommended out of work for sleeve and 3 for bypass). I am taking 7 days off work in addition to the two weekends. I am not telling anyone and just using vacation time.
  • I am at a 40 BMI, in my young 30s and no health related issues-- so while the bypass was sold as the gold standard, my doctor said I was not a good candidate because the bypass is a bit more extreme. He said if I had Diabetes he would give me the choice... but for me I didn't really have an option.

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Just something to keep in mind:

Many people assume that a higher starting BMI automatically means that bypass is the best choice. That is not necessarily so.

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I have two chronic conditions for which medication is essential to my well being, so could not have a procedure where the result would cause malabsorption. It was the sleeve or nothing for me.

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My choice was simple...I didn't want the non used part of my stomach still in my body so I chose the sleeve.

My doctor reccomened it obviously for more scientific and medical reasons lol

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I was worried about long term malabsorption and Vitamin deficiencies with bypass, so I elected for the sleeve. My surgeon said I was a good candidate for either (my initial BMI was 41)

Samantha did your BMI drop below 40 during your pre-op process? If so, how did your insurance company handle that?

I was afraid to lose and to be honest, my surgeon advised me not to lose to much during my 6 month supervised diet. Subsequently, I only "lost" 6 lbs in 6 months which brought my BMI down to 40 (and for that last weigh in I kept my phone, keys, heavy necklace etc. all on!) I think it depends on your insurance. In the end I had mild sleep apnea on the required sleep study, which meant I met the "comorbid condition" requirement so my BMI could be 35+. I have Meritain insurance.

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Also to clarify, you still need to take Vitamins following gastric sleeve, and there is still potential for deficiencies with both sleeve and bypass. For me personally, I perceived the sleeve as having a lower risk for malabsorption because it did not involve bypassing a portion of my small intestine. Bottom line: there's benefits and risks to both surgeries.

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My only issue was being hungry constantly, I was hungry and I over ate so I got fat. I have no comorbidities so the bypass just didn't seem right for me. I'm very happy with my decision. At 2 and a half weeks out I DO get hungry, but I eat my small portion and I'm completely satisfied. I have no desire to overeat (I'm pretty sure my sleeve would protest even if I tried!).

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Yes I'm wondering that too, I'm at 42 now and scared to "lose" because I have heard insurance has denied people due to dropping BMI.

I asked exactly this of my insurance company (BCBS of Ohio). I was given a link to the medical policy. It specified that my starting BMI had to be at least 40, or at least 35 with comorbidities. I was concerned about doing the six medically supervised dietitian visit would push me to being out of the BMI.

That's when they asked me to re-read: the STARTING BMI, not the BMI at the end of the 6 visits.

I think I called the insurance company a dozen times to learn how all this worked. I'll bet they are glad I'm done now! haha!

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Yes I'm wondering that too, I'm at 42 now and scared to "lose" because I have heard insurance has denied people due to dropping BMI.

In my case, my BMI at initial surgeon consultation was 40.2.

At the time we submitted to my insurance company it was 38.

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Converting from lapband to bypass...my research...my lapband misery and damage to my esophagus and erosion ...Gerd...made it easy for me to know that cutting 85% of my stomach was not for me...I was initially going for the sleeve but for me bypass is a better option.....by the way my friend had the sleeve performed on her and her daughter 2 weeks apart and she is doing fantastic...everybody needs to do what they feel is right...and go with it.

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Mine only had to show a loss. I lost 2 pounds. My BMI did not change. You need to "manage" this for your own benefit. The hoops they make you go through are sometimes ridiculous, and you need to play the game..."smartly". (is that a word?)

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    • 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!

    • 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. summerseeker

        Life as a big person had limited my life to what I knew I could manage to do each day. That was eat. I hadn't anything else to look forward to. So my eating choices were the best I could dream up. I planned the cooking in managable lots in my head and filled my day with and around it.

        Now I have a whole new big, bigger, biggest, best days ever. I am out there with those skinny people doing stuff i could never have dreamt of. Food is now an after thought. It doesn't consume my day. I still enjoy the good home cooked food but I eat smaller portions. I leave food on my plate when I am full. I can no longer hear my mother's voice saying eat it all up, ther are starving children in Africa who would want that!

        I still cook for family feasts, I love cooking. I still do holidays but I have changed from the All inclusive drinking and eating everything everyday kind to Self catering accommodation. This gives me the choice of cooking or eating out as I choose. I rarely drink anymore as I usually travel alone now and I feel I need to keep aware of my surroundings.

        I don't know at what point my life expanded, was it when I lost 100 pounds? Was it when I left my walking stick at home ? Was it when I said yes to an outing instead of finding an excuse to stay home ? i look back at my last five years and wonder how loosing weight has made such a difference. Be ready to amaze yourself.

        BTW, the liquid diet sucks, one more day and you are over the worst. You can do it.

    • CaseyP1011

      Officially here for a long time, not just a good time💪
      · 0 replies
      1. This update has no replies.
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