The Essential Gastric Sleeve Diet: What to Eat and Avoid After Surgery

The Essential Gastric Sleeve Diet: What to Eat and Avoid After Surgery

Stomach fat, located beneath your abdominal muscles, is unhealthy and tends to accumulate around your midsection, especially in individuals with high BMI or excess body fat. 

Reducing this fat can improve blood sugar, lower the risk of heart disease and high blood pressure, and decrease the likelihood of type 2 diabetes.

Choosing a gastric sleeve diet is a highly effective way to lose excess stomach fat and achieve a leaner body. This article explains how the diet works, who should consider it, its pros and cons, and potential side effects.

What is Gastric Sleeve Surgery?

What is Gastric Sleeve Surgery Gastric Sleeve Diet

Gastric Sleeve in Turkey, also known as sleeve gastrectomy surgery, helps you reach a healthy weight by making your stomach smaller. This involves removing part of the stomach and connecting the remaining sections to different parts of the intestines. 

By rerouting food, it makes you feel full faster and longer after meals, limiting how much you eat and absorb. There are two types: open surgery, with an abdominal incision, and laparoscopic surgery, using small incisions and special instruments. 

About 80% of the stomach is removed, leaving a sleeve-like shape below the ribcage, reducing its capacity.

Read Also: What is the Cost Of Gastric Sleeve

Why is the bariatric diet so important? 

The bariatric diet is crucial for these reasons:

  1. Supports Weight Loss: It helps individuals lose and maintain weight, improving overall health and reducing obesity-related risks.
  2. Promotes Healing: After bariatric surgery, the digestive system changes. Following a specific diet plan aids healing and prevents recovery complications.
  3. Prevents Nutritional Deficiencies: Bariatric surgery affects nutrient absorption. A well-planned diet ensures individuals get essential nutrients for overall health.
  4. Reduces Complication Risks: Following the diet minimizes post-surgery complications like dumping syndrome, gastrointestinal discomfort, and nutrient deficiencies.
  5. Encourages Healthy Eating: It promotes habits like portion control, consuming nutrient-rich foods, and avoiding unhealthy options.

Read also: Intragastric Balloon Diet

What is a gastric sleeve pre-op diet?

What is a gastric sleeve pre-op diet 2024

The gastric sleeve pre-op diet has several stages to shrink the liver and prep for surgery:

  1. Liquid Diet: Patients drink clear liquids like broth, water, juice, and sugar-free gelatin before surgery.
  2. Low-Calorie Diet: Some follow a low-calorie plan to aid weight loss and shrink the liver. This might include protein or meal replacement protein shakes.
  3. High-Protein Diet: Patients focus on high-protein foods like lean meats, eggs, tofu, and supplements to maintain muscle and aid healing.
  4. No Solid Foods: Solid foods are usually avoided before surgery to prevent complications. Patients may skip solids for a period before the operation.
  5. Hydration: Staying hydrated is vital. Patients are urged to drink plenty of water and clear liquids to avoid dehydration.

Read Also: How Much Does Gastric Balloon Cost

Bariatric procedures in Turkey at Best Prices

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What is a gastric sleeve diet plan?

What is a gastric sleeve diet plan 20241

After gastric sleeve surgery, patients follow a structured eating plan with several phases:

  1. Clear Liquid Diet
  2. Full Liquid Diet
  3. Pureed Diet
  4. Soft Diet:
  5. Regular Diet

HayatMed Clinic, located in Istanbul/Turkey, is highly experienced in performing plastic surgery. Based on patients’ evaluations, we offer satisfactory results at an affordable cost. We offer a free consultation on WhatsApp.

Gastric sleeve post-op diet

After sleeve gastrectomy diet Guide:

Liquid Phase (First 15 Days):

  • Start with easily digestible foods like broth-based soups (meat, chicken, or vegetable).
  • Include light, lactose-free yogurt for added protein.
  • Snack on yogurt with whey protein for sustained energy.

Read Also: Price for a Gastric Sleeve in Turkey

Transition Phase (15th Day – 1st Month):

  • Progress to pureed foods like soft-boiled eggs, blended vegetables, and light cheese.
  • Incorporate protein sources such as chicken, tuna, or yogurt.
  • Opt for fruit purees or smoothies for added nutrition.

Read Also: Price of a Gastric Bypass

Adjustment Phase (1st Month of Metabolic Surgery):

  • Continue with soft protein-rich foods like eggs, cheese, and lean meats.
  • Include a variety of cooked vegetables and legumes for fiber and nutrients.
  • Snack on yogurt or kefir with fruits for a balanced diet.

Read Also: Gastric Bypass in Turkey

Long-Term Maintenance (3 Months Post Surgery):

Long-Term Maintenance (3 Months Post Surgery)

  • Emphasize protein in every meal to support muscle repair and growth.
  • Include a mix of vegetables, legumes, and fruits for vitamins and minerals.
  • Snack on probiotic-rich foods like yogurt or Activia for gut health.

General Guidelines:

  • Chew food thoroughly and eat slowly to aid digestion.
  • Separate solid and liquid intake to prevent discomfort.
  • Stay hydrated by drinking water throughout the day.
  • Avoid fried and high-calorie foods to maintain weight loss success.

Read Also: What is The Difference Between Gastric Sleeve and Bypass

Top Surgeons

Our surgeons are members of the International Federation for the Surgery of OBESITY AND METABOLIC DISORDERS (IFSO). They are professors with a book on the gastric sleeve, and they have years of surgical experience.

Top Facilities

Our hospital is rated A- by the Turkish Ministry of Health and accredited by JCI, representing gold standards in hygiene and quality.

Affordable Prices

HayatMed always strives to provide the best services at affordable prices; HayatMed provides all-inclusive packages from operation to hotels and transportation at the best prices.

Bariatric procedures in Turkey at Best Prices

Our packages cover medical fees, hospital stays, airport transfers, and personal host services for a seamless experience

Tips for diet after sleeve surgery

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After gastric sleeve surgery, it’s vital to eat moderately to maintain weight loss. Here are some tips:

  1. Drink six to eight glasses of water daily, including clear liquids such as broth, tea, lemonade, and carbonated drinks.
  2. Eat smaller portions throughout the day and chew food thoroughly to avoid discomfort.
  3. Gradually add fiber to your diet to prevent gas and discomfort, consulting your doctor before taking supplements.
  4. Use a blender or food processor for smoother foods.
  5. Recognize physical from emotional hunger.
  6. Avoid overeating to prevent stomach expansion.
  7. Avoid trans fats, fried, processed, and fast foods.
  8. Consume plenty of water and foods rich in nutrients.
  9. Be cautious with over-the-counter drugs to protect your stomach lining.

Read Also: A Gastric Botox for Weight Loss

Requirements for gastric sleeve surgery In Turkey

Requirements for gastric sleeve surgery In Turkey 43

To qualify for gastric sleeve surgery in Turkey, you must:

  1. Be at least 18 years old, in good physical health, and free from severe medical conditions.
  2. Have a BMI of 30 or higher.

BMI, calculated by dividing your weight in kilograms by your height in square meters, determines eligibility. For example, if you weigh 110 pounds and are 5 feet tall, your BMI would be 110 divided by 5 x 5 = 110/25 = 4.8. With a BMI falling within the obese range (above 25), you would be eligible for surgery.

Read Also: Mini Gastric Bypass


In summary, the gastric sleeve diet is vital for those who have had the surgery. By sticking to a plan of clear liquids, full liquids, pureed foods, and soft foods and moving to a regular diet, patients aid healing, adjust to stomach changes, and succeed in long-term weight management.

Following the healthcare provider’s advice and making lifestyle adjustments are key to maximizing the benefits of the procedure.

Gastric Sleeve Diet FAQs

After gastric sleeve surgery, stick to a balanced diet of lean proteins, whole grains, fruits, and veggies. Avoid high-calorie, sugary, and fatty foods for lasting weight loss and health.

Always consult your healthcare provider before taking diet pills or supplements post-surgery. Some meds might affect your stomach or hinder healing, so seek professional advice.

It’s generally not recommended after gastric sleeve surgery. Carbonation may cause discomfort in the smaller stomach pouch. Hydrate with water instead.

Vital for surgery, it reduces liver size and fat, enhancing safety and effectiveness. Follow your healthcare team’s pre-op diet guidelines for better outcomes and recovery.

The length varies but typically lasts one to two weeks, aiding stomach healing and adjusting to food intake changes.

A liquid diet prevents complications, aids stomach healing, and helps adjust to the new stomach size while promoting initial weight loss.

About the author

Picture of Binsy George
Binsy George

Binsy brings over 13 years of expertise to the HayatMed Clinic Blog. With a passion for healthcare communication, she has crafted insightful articles that demystify complex medical topics, empowering readers to make informed decisions about their well-being.
Her wealth of experience ensures that each blog post is a reliable source of knowledge, fostering a deeper understanding of health and medical advancements.

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