Nutrition and Diet Phase


After bariatric surgery, you will need to make changes to your eating patterns. Upon your return home, you will be put on the Phase I Diet. Refer to your diet booklet for specific instructions and meal plans. Your postoperative diet will be progressed by your surgeon and dietician and will gradually transition to whole foods. It is important that you follow the progression and adhere to the specific instructions in order to maximize healing and minimize the risk of complications.

Your post-operative diet is divided into three phases: Liquids (Phase I), Softs (Phase II), and “Regular” Bariatric (Phase III). You can download our Nutrition Guidelines for Weight Loss Surgery and review the information below.

Diet phase

Phase I Diet:

Phase I consists of a full liquid diet. The most important aspect of the first months after surgery is to keep well hydrated. Aim for 64 ounces (8 cups) of water and other fluids daily by constantly sipping liquids. Do not gulp! Do not consume carbonated or high calorie sugary beverages. Get in the habit of carrying a beverage with you. You should never go a few hours without drinking anything. Constantly sip to avoid becoming dehydrated. Avoid fluids high in caffeine as they can increase your risk for dehydration. Your long-term protein goal is 60-80 grams per day, however during Phase I a more realistic and obtainable goal is 30-40 grams per day.

Acceptable liquids include water, broths, sugar-free gelatin, sugar-free popsicles, crystal light, skim milk, low-calorie protein drinks, and unsweetened flavor water. Please refer to yo