Sleeve Gastrectomy Recovery

Hospital stay: Usually 1–2 nights. You'll start sipping clear fluids in hospital once your surgical team confirms no leaks (sometimes checked with an imaging study).

Pain: Moderate: mostly from the laparoscopic port sites and gas pain (carbon dioxide used during surgery). Shoulder tip pain from residual gas is common and resolves over days. Walk as soon as possible: this helps with gas pain and clot prevention.

First week at home: Clear liquids only: water, clear broth, sugar-free jelly, diluted juice. Sip slowly and constantly. Dehydration is the most common reason for readmission. Aim for 1.5 litres of fluid per day.

As per healthdirect Australia's bariatric surgery guide (last checked Jul 2026): early mobilisation and adequate hydration are priorities in the first week.

Diet stages vary between surgical teams, but the general pattern is:

Stage 1: Clear liquids (days 1–7): Water, clear broth, sugar-free drinks. Small sips, not gulps.

Stage 2: Full liquids (weeks 1–2): Protein shakes, smooth soup, skim milk, yoghurt (no lumps). Aim for 60g protein per day.

Stage 3: Puree/soft (weeks 3–4): Blended or mashed foods. Scrambled eggs, cottage cheese, hummus, mashed vegetables. Eat slowly: 20–30 minutes per meal.

Stage 4: Soft solids (weeks 5–8): Soft cooked fish, tender chicken, cooked vegetables, soft fruits. Cut food small, chew thoroughly.

Stage 5: Regular diet (week 8+): Most foods reintroduced gradually. Portion sizes are dramatically smaller: typically ½ to 1 cup per meal. Some foods may not be tolerated (common: bread, pasta, fibrous meats, carbonated drinks).

As per the ASMBS patient guide, Life After Bariatric Surgery (last checked Jul 2026): 60–100g of protein per day and 64+ ounces (about 1.9 litres) of fluid per day are recommended. Follow your bariatric team's specific diet plan.

After sleeve gastrectomy, vitamin and mineral supplementation is lifelong, not optional. The reduced stomach size and altered absorption increase the risk of deficiencies.

Standard supplements (for life):

• Multivitamin with iron: daily
• Calcium citrate (1,200–1,500mg/day): split into 2–3 doses
• Vitamin D: as directed (commonly 3,000 IU/day)
• Vitamin B12: monthly injection or daily sublingual

Blood tests: Regular monitoring of vitamin levels, iron, B12, folate, calcium, and vitamin D, typically at 3, 6, and 12 months post-op, then annually for life.

Expected weight loss: ASMBS reports that bariatric surgery patients typically lose around 60% of excess weight by 6 months, and as much as 77% of excess weight by 12 months, figures for bariatric surgery generally rather than sleeve gastrectomy specifically. On average, about half of the excess weight lost is maintained at the 5-year mark. Individual results vary with diet and lifestyle adherence.

As per the ASMBS Metabolic and Bariatric Surgery overview (last checked Jul 2026): lifelong nutritional supplementation and follow-up are essential after all bariatric procedures.

• American Society for Metabolic and Bariatric Surgery: Life After Bariatric Surgery (patient guide: diet progression, protein/fluid targets, lifelong supplementation)
• ASMBS: Metabolic and Bariatric Surgery overview (expected weight-loss figures)
• healthdirect Australia: Guide to bariatric surgery (procedure types, diet stages, follow-up care)

Last checked July 2026. This page summarises general patient guidance. It is not a substitute for advice from your own surgical and dietetic team. See our full sources page for more.