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Feeling Weak.....Does anybody get weak when you are on pre-op or right after surgery on such a low calorie diet?



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The whole first week post op when I was on the clear liquid diet taking in almost no Protein or calories I started to get very weak about the 3rd day in. Only if I were walking around for long periods of time and not taking breaks to hydrate and relax. Feeling weak is normal. Our bodies can survive over 21 days without food so you'll be fine, just make sure you stay hydrated and take it easy :)

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It's normal and it would be unusual to have a ton of energy after the pre op liver cleanse, the surgery and then early recovery. I didn't get any energy back until after week six.

Kate :)

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Yep! Got to where it was hard for me to lift my arms to wash my hair and I often had to sit down for a bit after my shower before I could get dried off and dressed. I had that all through my pre-op and for the first several weeks post-op until I was finally able to move onto more solid food and get in more calories.

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Pre-op I had this issue. Post-op, I guess my body had adjusted to starvation that I was okay. Still post op until about 6 weeks when I could eat more, I only had energy in bursts.

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I was weak for a couple weeks post op. It was hard to get through the day on just broth and sugar-free Jell-O. Didn't get much better when I added Protein shakes, milk, and juice. Bleh. You'll get through it, though. It's very temporary!

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I have been feeling fine on my pre-op diet. I am using Meal Replacement shakes, which have about 1/3 the RDA of Vitamins and minerals in addition to the 20g of Protein and a little healthy fat. I am also taking a daily Multivitamin, and making sure I get a variety of generous portions of low-cal veggies and a piece of varying fruit each day. I am avoiding carbs and doing light exercise.

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making sure I get a variety of generous portions of low-cal veggies and a piece of varying fruit each day.

Must be nice to be allowed veggies and fruit on your pre-op!

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I am on day 8 of Pre-op and seem to be doing ok but on day 4 and 5 by the time I got home from work I was just dragging hiney.

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making sure I get a variety of generous portions of low-cal veggies and a piece of varying fruit each day.

Must be nice to be allowed veggies and fruit on your pre-op!

I have seen that some people need to be on all liquids - that would be tough! My pre-op diet is two weeks of:

- Calorie counting, 1200 calories total for men, and 1000 calories total for women, which means the "real meal" has to be modest and quite low in carbs and fat

- 3 Meal Replacement shakes (I actually am using 2 and replacing Breakfast and lunch)

- 1 "real meal" per day of lean meat and veggies

- 1 piece of fruit

- 1/2 cup of fat-free milk or nonfat/low-sugar yogurt

- while not required, we are allowed to eat as many veggies as we want - I often eat a whole 12oz bag of veggies as part of my dinner, and snack on raw baby carrots - there are almost no calories in veggies, and lots of Vitamins and Fiber

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@@Barry W Definitely a more liveable plan than my surgeon required. I was just allowed three shakes a day and one green salad (specific veggies) with calorie free dressing. It was 450 calories a day.

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@@Barry W Definitely a more liveable plan than my surgeon required. I was just allowed three shakes a day and one green salad (specific veggies) with calorie free dressing. It was 450 calories a day.

Ouch, not sure why they are so strict - the thing is, many people may then face compliance issues, and I'd think a less restrictive plan that patients follow would be better than a very restrictive plan that that some don't. Sounds like your willpower held though - well done!

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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?
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    • Doughgurl

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      1. Phil Penn

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    • 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!
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      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. 💗

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    • Alisa_S

      On day 4 of the 2 week liquid pre-op diet. Surgery scheduled for June 11th.
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      · 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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