What Is Gastric Sleeve Surgery?

Gastric Sleeve Surgery, also known as Sleeve Gastrectomy, is a highly effective and increasingly popular bariatric (weight-loss) procedure. It is specifically designed to help individuals struggling with obesity achieve long-term and sustainable weight loss.

To begin with, this is a minimally invasive surgery that involves permanently removing a large portion of the stomach—approximately 75–80%—and reshaping the remaining part into a slim, tube-like “sleeve.”

As a result, this newly formed gastric sleeve holds significantly less food, which naturally leads to a reduction in calorie intake. Moreover, by removing the portion of the stomach that produces ghrelin—the hunger hormone—the procedure helps decrease appetite.

Consequently, patients not only eat less but also feel full sooner and experience fewer food cravings, making the weight-loss journey more manageable and effective in the long run.

How Does the Procedure Work?

Gastric sleeve surgery is typically performed laparoscopically, which means the surgeon makes small incisions and uses a camera (laparoscope) to guide the procedure. This approach results in less scarring, faster recovery times, and lower complication risks compared to traditional open surgery.

Here’s a step-by-step breakdown of how it works:

1. The patient is placed under general anesthesia.

2. Surgeon removes the outer curved portion of the stomach.

3. Remaining stomach is sealed using surgical staples, forming a banana-shaped sleeve.

4. The procedure typically takes 60 to 90 minutes.

5. Most patients stay in the hospital for 2–3 days and can resume light activities within 1–2 weeks.

What Makes It Different from Other Weight-Loss Surgeries?

Unlike gastric bypass, gastric sleeve surgery does not involve rerouting the intestines or creating a bypass. This makes it a simpler yet highly effective option with fewer risks of malabsorption and nutritional deficiencies. It also preserves normal stomach function and digestion, while still providing excellent weight-loss results.

Additionally, since it is a permanent and non-reversible procedure, it requires a long-term commitment to lifestyle changes, including healthier eating habits, portion control, and regular physical activity.

Who Should Consider Gastric Sleeve Surgery?

Gastric sleeve surgery is ideal for individuals who:

• Body Mass Index (BMI) of 35 or higher
• Have a BMI of 30–34 and suffer from obesity-related health problems such as Type 2 diabetes, hypertension, or sleep apnea
• Are between the ages of 18 and 65 (although exceptions can apply)
• Have tried traditional weight-loss methods such as diet and exercise without lasting success
• Are ready to commit to long-term follow-up care, nutritional guidance, and lifestyle adjustments

Long-Term Results and Success Rates

Patients can expect to lose 60–70% of their excess body weight within the first 12–18 months after the surgery. However, results vary depending on the patient’s commitment to post-operative care. Most importantly, the surgery often leads to improvements or complete resolution of obesity-related conditions, including:

• Type 2 diabetes
• High blood pressure
• High cholesterol
• Joint pain
• Polycystic ovary syndrome (PCOS)
• Gastroesophageal reflux disease (GERD)
• Obstructive sleep apnea