The Post-Op Diet Guide
Gastric Sleeve & Mini Gastric Bypass. This progressive diet will prevent future complications, weight gain, and malnourishment while allowing your stomach to heal.
General Rules for Success
The success of bariatric surgery depends on portion restriction and consistency.
Chew Slow & Relish
Take small zips. Look for your tolerance. Stop eating immediately as soon as you feel full or satisfied.
Measure Portions
1st month: 1/4 to 1/2 cup.
3-6 months: 1/2 to 1 cup.
12+ months: 1 cup maximum.
Avoid Straws & Gum
Straws make you suck air and cause painful gas. Gum increases acid reflux and gastric juices.
Proper Hydration
Liquid intake should be 30-50 ounces per day. Do not drink liquids 30 minutes before or after meals.
Dietary Phases Timeline
Your stomach is healing. Follow these steps precisely to ensure a safe recovery.
Clear Liquid Diet
Goal: Hydration and tolerance to liquids. Start drinking 1 to 2 oz per hour till tolerance.
Full Liquid Diet
Goal: Add proteins, calcium, and start supplementation. Increase liquid intake.
Start Vitamin Supplementation now.
Soft / Puréed Diet
Goal: Introduction of normal foods but in puréed or extremely soft consistency.
Avoid: Red meat, chicken breast (too dry), bread, raw veggies.
Regular Solid Diet
Goal: Return to normal eating habits with strict portion control and high protein focus.
Post-Op Meal Guide
Not sure what to eat during your recovery? Here are specific meal ideas and recipes for each critical phase of your journey. Remember to measure your portions!
Protein Shakes
- • Vanilla Whey + Unsweetened Almond Milk
- • Chocolate Isopure + Half banana (blended smooth)
- • Premier Protein ready-to-drink (Sip slowly)
Savory Liquids
- • Strained Cream of Chicken Soup
- • Strained Cream of Tomato Soup
- • Bone Broth mixed with unflavored protein powder
Snack Liquids
- • Sugar-free Pudding (thinned with milk)
- • Plain Greek Yogurt (No fruit chunks, thinned)
- • V8 Vegetable Juice (Low sodium)
Breakfast Options
- • Scrambled egg (very soft) with a pinch of cheese.
- • Plain Greek yogurt with sugar-free applesauce.
- • Protein oatmeal (very watery consistency).
Lunch Options
- • Tuna salad (mixed with greek yogurt instead of mayo, mashed well).
- • Baked ricotta cheese with marinara sauce (Ricotta Bake).
- • Refried beans (mashed) with a sprinkle of low-fat cheese.
Dinner Options
- • Baked white fish (flaky and soft) with mashed carrots.
- • Mashed sweet potatoes with unflavored protein powder.
- • Soft tofu mashed with soy sauce.
Golden Rule: Eat your protein first! Only eat vegetables or complex carbs if you still have room after your 4oz of protein.
Chicken & Fish Options
- • Grilled chicken breast with steamed asparagus.
- • Chicken fajitas (No tortillas, just chicken and bell peppers).
- • Baked Salmon with a slice of avocado.
- • Garlic fish foil pack with zucchini.
- • Chicken salad (Protein style, wrapped in lettuce).
Beef & Other Proteins
- • Turkey meatballs with zucchini noodles.
- • Lean steak bites with mushrooms and onions.
- • Beef stew with soft cooked vegetables.
- • Hard boiled eggs with cherry tomatoes.
- • Zucchini stuffed with ground lean beef.
Supplementation Protocol
CRITICAL RULE: Only use chewable, liquid, or dissolve forms. NO capsules or tablets as they will cause intolerance, nausea and vomiting. (This only applies for vitamins/minerals, not for regular medication).
| Nutrient | Daily Requirement |
|---|---|
| Multivitamin | 2 per day |
| Calcium citrate + Vit D | 1200-2000 mg |
| Iron | 40-65 mg |
| B12 | 350 mg |
| Biotin (For hair loss) | 250-400 mg |
| Zinc | 5 mg |
Approved Vitamin Brands
- • Celebrate (Multi-complete)
- • Bariatric Advantage (Advance Multi EA - chewable)
- • Tespo (Bariatric complete liquid)
- • Bari Melts (Multivitamin, Iron, Calcium)
Probiotics
Requirement: 15-40 Billion CFU (Lactobacillus and Bifidobacterium)
- • Ultimate Flora
- • Bowtrol
Measuring Your Success
Do not weigh yourself every day. Weight loss is different for everybody, so do not compare yourself. There is no absolute "weight loss target per time"; the objective is to lose at least 70% of your excess weight and decrease health risks.
The ideal way to measure your results is by checking your abdominal circumference (at the belly button) every week, and checking your actual weight only monthly.
Target Body Fat Ranges
- 20-39 years: 21% - 32%
- 40-59 years: 23% - 33%
- 20-39 years: 8% - 19%
- 40-59 years: 11% - 21%
Track Monthly
Keep a calendar tracking your Weight and Abdominal Circumference. Do body composition to measure your visceral fat and muscle mass.
If you notice muscle mass lost, you must increase protein intake immediately.
Common Post-Op Symptoms
Experiencing Hairloss?
Very common 3-6 months after surgery due to the hypocaloric diet. It will grow back! Ensure you are taking at least these nutrients daily:
Low Energy Levels?
Energy drops significantly because you went from ~2500 calories to 500-1000 calories per day. If you feel extremely fatigued, verify your intake of:
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