Gastric sleeve surgery, also known as sleeve gastrectomy, is a weight loss procedure that reduces the size of the stomach. During the operation, approximately 75–80% of the stomach is removed, leaving behind a small, tube-shaped section.
This smaller stomach helps patients feel full more quickly and reduces hunger by lowering the production of the hunger hormone ghrelin. Unlike other weight loss surgeries, gastric sleeve does not involve rerouting the intestines.
It is a minimally invasive procedure, typically performed laparoscopically, meaning quicker recovery times and fewer complications for most patients.
Who Is a Good Candidate for Gastric Sleeve Surgery?
Gastric sleeve surgery is recommended for people who are significantly overweight and have struggled to lose weight through diet and exercise alone.
Most candidates have a Body Mass Index (BMI) of 35 or higher, often with obesity-related health problems such as type 2 diabetes, high blood pressure, or sleep apnea.
It may also be an option for people with a BMI between 30–35 if they have serious medical conditions linked to their weight. A full medical evaluation is necessary to determine eligibility.
This procedure is not just about losing weight — it’s about improving overall health and quality of life.
Why Do We Gain Weight? (Understanding the Causes of Obesity)
Weight gain is often caused by a combination of factors including poor eating habits, lack of physical activity, genetics, and hormonal imbalances. In today’s fast-paced lifestyle, high-calorie diets and sedentary routines are common contributors.
Emotional eating, stress, and sleep problems can also play a major role. Obesity is not just about willpower — it’s a complex health issue influenced by both biological and environmental factors.
Why Diet and Exercise Aren’t Always Enough?
For many people, traditional methods like dieting and exercising don’t lead to lasting results. The body often resists weight loss by slowing metabolism or increasing hunger hormones, making it hard to maintain progress.
In cases of severe obesity, these methods may not be enough to reverse health risks. Surgery like gastric sleeve offers a medically supported solution when lifestyle changes alone fall short.
How Is Gastric Sleeve Surgery Performed?
Gastric sleeve surgery is performed under general anesthesia using a laparoscopic (minimally invasive) technique. The surgeon makes small incisions and removes about 75–80% of the stomach.
What remains is a narrow, sleeve-shaped stomach that holds less food and reduces hunger. The procedure usually takes about 1–2 hours, and most patients stay in the hospital for one or two days.
What to Expect After Surgery?
After gastric sleeve surgery, patients usually lose weight quickly, especially in the first 6 to 12 months. You will need to follow a special diet, starting with liquids and slowly moving to solid foods.
Lifestyle changes are essential for long-term success. Regular follow-ups, vitamin supplements, and a commitment to healthier habits will help you achieve lasting results and improve your overall health.
Benefits and Risks of Gastric Sleeve Surgery
Gastric sleeve surgery can lead to significant weight loss, improved energy, and better control of health conditions like diabetes, high blood pressure, and sleep apnea. Many patients report a better quality of life and increased confidence.
As with any surgery, there are risks such as bleeding, infection, or leakage from the stomach. Long-term risks may include vitamin deficiencies if supplements are not taken. However, with proper care and follow-up, most patients recover well and experience lasting benefits.
Real Patient Story: Christopher and Catherine’s Transformation Journey
Christopher and Catherine Neal traveled from the UK to Erdem Hospital in Istanbul, not just for surgery, but to reclaim their health and future. At 251 kg, Christopher faced severe health risks including diabetes, sleep apnea, and limited mobility. Catherine, at 135 kg, struggled with chronic pain and depression.
After undergoing gastric sleeve surgery at Erdem Hospital, their lives changed dramatically. They now enjoy walking, cooking together, and living with renewed energy and confidence. Their story is a powerful reminder that with the right care, lasting transformation is possible.
Expert Insight: Gastric Sleeve Surgery with Prof. Dr. Ali Solmaz
At Erdem Hospital, gastric sleeve surgeries are performed by Prof. Dr. Ali Solmaz, a leading expert in bariatric surgery with years of international experience. His precision, compassionate approach, and dedication to patient well-being set him apart.
Prof. Dr. Solmaz believes that successful weight loss surgery is not just about technique — it’s about trust, preparation, and long-term care. Under his guidance, patients receive not only world-class treatment, but also the confidence to take control of their health journey.
Why Choose Erdem Hospital? A Trusted Partner in Your Weight Loss Journey
Erdem Hospital, located in Istanbul, is more than just a medical facility, it’s a place where care continues long after surgery. Known for its personalized approach and international standards, Erdem supports patients at every step of their transformation.
Here’s why thousands of patients from around the world choose Erdem Hospital:
Ongoing Support: Post-operative care doesn’t end at discharge. Erdem provides continuous nutritional and psychological support.
Expert Surgeons: All surgeries are performed by experienced specialists, including renowned bariatric surgeon Prof. Dr. Ali Solmaz.
State-of-the-Art Technology: The hospital uses modern surgical equipment and advanced medical systems for maximum safety.
International Patient Services: Multilingual staff, travel coordination, and full medical guidance make the process smooth for international patients.
Compassionate Care: Every patient is treated like family with empathy, respect, and individualized attention.
Choosing Erdem Hospital means choosing experience, care, and a real commitment to your well-being.
FAQ’s About Gastric Sleeve
Is a gastric sleeve safe?
It is, indeed. A gastric sleeve is a more invasive surgery than a gastric band, and there are risks as with any surgical procedure. As a result, it is vital to select a trained bariatric surgeon with substantial gastric sleeve experience. The gastric sleeve is a safe and effective treatment when performed by a surgeon with extensive experience in helping individuals lose weight.
How does the gastric sleeve procedure work?
Laparoscopic surgery, which involves making small incisions in the belly and removing a section of the stomach with a camera and surgical instruments, is most commonly used.
Who can benefit from gastric sleeve surgery?
Individuals with a BMI of 40 or higher, or a BMI of 35 or higher, who have obesity-related health issues such as diabetes, high blood pressure, or sleep apnea, are frequently candidates for gastric sleeve surgery.
What are the risks and complications associated with gastric sleeve surgery?
Bleeding, infection, blood clots, staple line leaks, and the potential of developing vitamin deficiencies are among dangers and concerns associated with gastric sleeve surgery.
How much weight should I expect to lose following gastric sleeve surgery?
Weight loss after gastric sleeve surgery varies by individual, but most patients should expect to lose around 60% of their excess body weight within the first two years.
Is the weight loss following gastric sleeve surgery permanent?
Weight loss can be permanent if the patient maintains a healthy diet and exercise plan after surgery.
How long does it take to recover from gastric sleeve surgery?
Typically, the recovery period lasts around 2-3 weeks, during which the patient must follow a strict diet and avoid strenuous physical activity.
When can I go back to work following surgery?
Most patients can return to work within 2-3 weeks of surgery, depending on their employment and overall health.
Will I have to eat a particular diet after having gastric sleeve surgery?
Yes, patients must follow a rigorous diet plan after gastric sleeve surgery, which generally includes drinking liquids and eating pureed foods for the first few weeks before gradually reintroducing solid foods.