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- MayoClinic.com; Gastric Bypass Diet; October 2009
- MedlinePlus; Your Diet After Gastric Bypass Surgery; December 2010
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What to Eat Three Weeks After Gastric Bypass
Getting gastric bypass surgery is a serious medical procedure that cuts the stomach in half, either using staples or an adjustable band. The procedure will help you feel full more quickly while you're eating, which may help you lose weight. Gastric bypass surgery permanently alters the way that you eat, and even three weeks after your surgery, you still need to follow a modified diet 2. Talk to your doctor for a specific diet plan based on your particular case.
Pureed Foods
For the first three weeks after gastric bypass surgery, your doctor may recommend you eat only pureed foods 2. On your third week, your doctor will keep you on a diet of mostly pureed foods, with a few other slightly harder foods included. Puree foods in a blender or food processor until they have a smooth and creamy consistency. Foods like beans, lean ground meat, egg whites, fish and yogurt help you get adequate protein. You can also puree soft fruits and vegetables and eat them as a soup or a smoothie.
- For the first three weeks after gastric bypass surgery, your doctor may recommend you eat only pureed foods 2.
- On your third week, your doctor will keep you on a diet of mostly pureed foods, with a few other slightly harder foods included.
Soft Foods
Soft Diet List After Bowel Surgery
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When your doctor allows it, you may add soft foods into your diet about three weeks after your surgery. Your doctor may recommend soft foods like low-fat cottage cheese, cooked baby shrimp, tuna with fat-free mayonnaise, baked soft fish, tofu, thinly sliced, low-fat deli meats like turkey and roast beef, oatmeal and hot cereal, soft cooked vegetables like potatoes, carrots, zucchini and squash, canned vegetables and fruits with no skin and soft lettuce, like green leaf lettuce.
Liquids
Drink 6 to 8 cups of liquids, like clear broths, water, low-fat milk and juice, to stay hydrated throughout the day. Do not drink them with meals. Because your stomach is much smaller than it was before, drinking liquids along with your meals may cause nausea, stomach pain and vomiting. Even if it does not cause side effects, drinking fluids with meals may make you feel so full, you are unable to finish your meal.
- Drink 6 to 8 cups of liquids, like clear broths, water, low-fat milk and juice, to stay hydrated throughout the day.
Foods to Avoid
Diet After a Frenectomy
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Although some soft foods are OK to eat during the third week, if your doctor approves, others may cause nausea and vomiting because they are too difficult to digest. Fatty foods like butter, margarine, sour cream, gravy, bacon fat, whole milk, hard cheese, dressings, desserts, cream cheese and mayonnaise are too high in fat to digest properly. Raw vegetables, dried fruit, bread, peanut butter, macaroni and cheese, pasta and melted cheese may be too fibrous or sticky to digest -- save these foods for later in your recovery.
Related Articles
References
- MayoClinic.com; Gastric Bypass Diet; October 2009
- MedlinePlus; Your Diet After Gastric Bypass Surgery; December 2010
- Duke University Health System: The Recommended Diet Following Bariatric Surgery
- Beamish AJ, Reinehr T. Should bariatric surgery be performed in adolescents?Eur J Endocrinol. 2017 Apr;176(4):D1-D15. doi:10.1530/EJE-16-0906
- American Society for Metabolic and Bariatric Surgery. Bariatric Surgery Procedures.
- Maciejewski ML et al. Bariatric Surgery and Long-term Durability of Weight Loss JAMA Surg. 2016 Nov 1;151(11):1046-1055. doi:10.1001/jamasurg.2016.2317
- Telem DA, Jones DB, Schauer PR, Brethauer SA, Rosenthal RJ, Provost D, Jones SB. (March 2020). Society of American Gastrointestinal and Endoscopic Surgeons (SAGES). Updated Panel Report: Best Practices for the Surgical Treatment of Obesity.
- Stahl JM, Malhotra S. Obesity Surgery Indications and Contraindications. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2019. Updated May 2020.
- Kim RB. (Updated April 2020). Bariatric operations for management of obesity: Indications and preoperative preparation. Jones D, ed. UpToDate. Waltham, MA: UpToDate.
- Palermo M, Acquafresca PA, Rogula T, Duza GE, Serr E. Late surgical complications after gastric by-pass: a literature review. Arq Bras Cir Dig. 2015 Apr-Jun; 28(2): 139–143. doi:10.1590/S0102-67202015000200014
- University of Rochester Medical Center. (2020). Anastomotic Leak After Gastric Bypass Surgery
- Kim RB. (Updated May 2019). Laparoscopic Roux-en-Y gastric bypass. Jones D, ed. UpToDate. Waltham, MA: UpToDate.
- Wolfe BM, Kvach E, Eckel RH. Treatment of Obesity: Weight Loss and Bariatric Surgery. Circ Res. 2016 May 27; 118(11): 1844–1855.doi:10.1161/CIRCRESAHA.116.307591
- Monpellier VM, Antoniou EE, Aarts EO, Janssen IMC, Jansen ATM. Improvement of Health-Related Quality of Life After Roux-en-Y Gastric Bypass Related to Weight Loss. Obes Surg. 2017; 27(5): 1168–1173. doi:10.1007/s11695-016-2468-6
- Adams TD, Mehta TS, Davidson LE, Hunt SC. All-Cause and Cause-Specific Mortality Associated with Bariatric Surgery: A Review. Curr Atheroscler Rep. 2015 Dec; 17(12): 74. doi:10.1007/s11883-015-0551-4
- John Hopkins Medicine. Roux-en-Y Gastric Bypass Weight-Loss Surgery.
- Edholm D, Kullberg J, Karlsson FA, Haenni A, Ahlström H, Sundbom M. Changes in liver volume and body composition during 4 weeks of low calorie diet before laparoscopic gastric bypass. Surg Obes Relat Dis. May-Jun 2015;11(3):602-6. doi:10.1016/j.soard.2014.07.018
- UCSF Health. Recovery from Bariatric Surgery.
- Richardson WS, Plaisance AM, Periou L, Buquoi J, Tillery D. Long-term Management of Patients After Weight Loss Surgery. Ochsner J. 2009 Fall; 9(3): 154–159.
- UPMC. (2020). About Post-Surgery Bariatric Vitamins & Bariatric Supplements.
- Aminiana A, Changa J, Brethauera SA, Kimb JJ, American Society for Metabolic and Bariatric Surgery Clinical Issues Committee. ASMBS updated position statement on bariatric surgery in class I obesity (BMI 30-35 kg/m2). Surgery for Obesity and Related Diseases. 14 (2018) 1071-87.
- UCLA Health. Obesity Treatments. Gastric Bypass Surgery.
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Megan Smith has been a freelance writer and editor since 2006. She writes about health, fitness, travel, beauty and grooming topics for various print and Internet publications. Smith earned a Bachelor of Fine Arts in writing from New York University.