What does fact checked mean?
At Healthfully, we strive to deliver objective content that is accurate and up-to-date. Our team periodically reviews articles in order to ensure content quality. The sources cited below consist of evidence from peer-reviewed journals, prominent medical organizations, academic associations, and government data.
The information contained on this site is for informational purposes only, and should not be used as a substitute for the advice of a professional health care provider. Please check with the appropriate physician regarding health questions and concerns. Although we strive to deliver accurate and up-to-date information, no guarantee to that effect is made.
Phase 2 Diet for Gastric Bypass
A gastric bypass diet usually consists of four phases — liquids, pureed foods, soft foods and regular solids. Following an appropriate post surgery diet will help your body heal faster and prevent complications at the surgical site or complications resulting from malnutrition.
Bariatric surgeries are usually performed on extremely obese individuals who are 100 pounds overweight or more. Gastric bypass surgery reduces the size of the stomach and allows food entering the digestive tract to bypass a large portion of the stomach and part of the small intestine. This helps you to feel full after eating small amounts of food, decreases food intake, decreases calorie and nutrient absorption and helps significantly with weight loss.
- Bariatric surgeries are usually performed on extremely obese individuals who are 100 pounds overweight or more.
- Gastric bypass surgery reduces the size of the stomach and allows food entering the digestive tract to bypass a large portion of the stomach and part of the small intestine.
Diet After a Frenectomy
Phase one of a gastric bypass diet includes liquids only; however a phase two diet consists of liquids and strained or pureed foods. According to Medline Plus, the first two to three weeks after your surgery you’ll eat only liquid or pureed foods 2. Phase three consists of soft solids and phase four includes regular solids. Your doctor will help you determine when you’re ready to progress between each phase.
- Phase one of a gastric bypass diet includes liquids only; however a phase two diet consists of liquids and strained or pureed foods.
- According to Medline Plus, the first two to three weeks after your surgery you’ll eat only liquid or pureed foods 2.
Eat slowly during each phase in a gastric bypass diet to help prevent overeating and dumping syndrome. Choose foods low in sugar, avoid empty calories and avoid high-fat foods to help with weight loss and prevent malnutrition. Supplement with vitamins and minerals as directed by your doctor. Consume adequate amounts of protein to help with healing, and during phase two of your diet, make sure to avoid foods that contain lumps or chunks. All solid foods eaten should be strained or pureed during phase two. Avoid high-calorie foods and beverages, including alcohol.
- Eat slowly during each phase in a gastric bypass diet to help prevent overeating and dumping syndrome.
- Consume adequate amounts of protein to help with healing, and during phase two of your diet, make sure to avoid foods that contain lumps or chunks.
Gastrointestinal Soft Diet
Liquids, and pureed and strained foods that are high in nutrients, contain protein and are low in calories are good choices during a gastric bypass phase two diet. High-protein drinks such as Boost, Ensure or Carnation Instant Breakfast are usually recommended during phases one and two.
Sample Meal Plan
St. John’s Center for Metabolic and Weight Loss Surgery provides sample meal plans for a weight loss surgery phase two diet. This daily meal plan consists of 2 cups of dairy, four 1 oz. servings of protein foods including pureed meats or high-protein supplements, 1/2 to 1 cup of pureed vegetables or vegetable juice, 1/4 to 1 cup of carbohydrate-containing foods, and 6 to 8 cups of beverages each day. Avoid drinking the beverages immediately before, during or immediately after your meals.
- St. John’s Center for Metabolic and Weight Loss Surgery provides sample meal plans for a weight loss surgery phase two diet.
- servings of protein foods including pureed meats or high-protein supplements, 1/2 to 1 cup of pureed vegetables or vegetable juice, 1/4 to 1 cup of carbohydrate-containing foods, and 6 to 8 cups of beverages each day.
Diet After a Frenectomy
Gastrointestinal Soft Diet
Helping Hunger When on a Clear Liquid Diet
Diets for Patients With Dysphagia
Soft Diet List After Bowel Surgery
Meal Plans for Dumping Syndrome
How to Reintroduce Solid Foods Into a Diet
Special Diet for Post Kidney Stone Removal Surgery
List of Soft Foods Allowed Following Surgery
How to Take Iron Supplements Before Surgery
- Journal of the American Medical Association: Bariatric Surgery
- Medline Plus: Your Diet After Gastric Bypass 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.
Erin Coleman is a registered and licensed dietitian. She also holds a Bachelor of Science in dietetics and has extensive experience working as a health writer and health educator. Her articles are published on various health, nutrition and fitness websites.