Weight Management and Metabolic Surgery Centre

The Weight Management and Metabolic Surgery Centre is led by experienced surgeons in bariatric and metabolic, integrating advanced endoscopic and minimally invasive laparoscopic techniques with evidence-based weight management principles. Through collaboration with a multidisciplinary team (including dietitians, and physiotherapists), we design personalized, tiered health management plans tailored to individual obesity levels.

Our services include:

• Medication therapy for weight management
• Endoscopic procedures
• Minimally invasive laparoscopic surgeries
• Lifestyle intervention programs to promote sustainable habits.

We aim to help patients achieve long-term weight loss, effectively manage metabolic diseases (e.g., diabetes, hypertension), and improve overall quality of life. By combining cutting-edge treatments with holistic care, our center delivers scientifically grounded, lasting solutions for healthy weight management.

Clinically, we can use the Body Mass Index (BMI) to estimate body fat percentage.

Body Mass Index (BMI) estimates the amount of body fat and is calculated as follows:

BMI = Weight (kg) ÷ Height (m) ÷ Height (m)

According to the World Health Organization’s (WHO) 2000 Asia-Pacific BMI Guidelines, adult BMI classifications are as follows:

In Hong Kong, based on the the Hong Kong Society for Metabolic and Bariatric Surgery Position Statement 2024, the following criteria are recommended for adults considering bariatric (weight-loss) and metabolic surgery, as well as endoscopic treatments:

1. Criteria for Bariatric Surgery

Bariatric surgery is primarily used for patients with severe obesity to improve physical and mental health. Eligible adult patients (age ≥18) who have failed to maintain weight loss despite optimal lifestyle changes, dietary control, or non-surgical treatments may consider surgery if they meet the following criteria:

BMI ≥35 kg/m², with or without obesity-related comorbidities.
BMI ≥30 kg/m², if accompanied by obesity-related comorbidities.
Obesity-related comorbidities refer to conditions directly caused or exacerbated by obesity, including:

2. Criteria for Metabolic Surgery

Metabolic surgery primarily aims to improve blood sugar control in obese patients with Type 2 diabetes (T2DM). Eligible adult T2DM patients (age ≥18) who have failed to achieve sustained weight loss despite optimal lifestyle interventions may consider metabolic surgery under the following conditions:

BMI ≥37.5 kg/m², regardless of current blood sugar control or complexity of diabetes treatment.
BMI 32.5–37.4 kg/m², if blood sugar remains poorly controlled despite optimal medication, lifestyle changes, and non-surgical treatments.
BMI 27.5–32.4 kg/m², if high blood sugar persists despite optimal drug therapy (including oral or injectable medications like insulin) and lifestyle interventions.

• Endoscopic Treatment

1. Intragastric Balloon

• A silicone balloon is placed in the stomach via endoscopy, occupying 500–600 mL to induce early satiety.
• Not suitable for patients with gastric ulcers, hiatal hernia, or prior stomach surgery.
• Temporary treatment (removed after 6–12 months).
• Weight may rebound after removal, so diet and exercise habits must be maintained.

2. Endoscopic Sleeve Gastroplasty (ESG)

• A non-surgical, incision-free procedure that reduces stomach size via endoscopic suturing.
• The stomach is reshaped from a pouch to a tube, reducing capacity by ~70%.
• No organ removal → preserves digestion function.
• Lower risk & faster recovery than traditional surgery.

•  Laparoscopic (Minimally Invasive) Surgeries

1. Laparoscopic Sleeve Gastrectomy (LSG)

• The sleeve gastrectomy involves removing about 80% of the stomach, leaving a narrow tube-shaped stomach (100–150 mL capacity).
• Reduces food intake and decreases ghrelin (hunger hormone) production.
• Average weight loss: 60–70% of excess weight.
• Improves Type 2 diabetes, hypertension, and other metabolic disorders.
• No intestinal rerouting → lower risk of nutrient deficiencies.
• Surgery duration: 1–2 hours, hospital stay: 2–3 days, recovery: 2–4 weeks.

2.Laparoscopic Gastric Bypass (Roux-en-Y Gastric Bypass, LRYGB)

• Combines restriction (small stomach pouch) and malabsorption (intestinal bypass).
• The stomach is divided into a small 20–50 mL pouch, connected directly to the small intestine, bypassing the duodenum.
• Average weight loss: 70–80% of excess weight, with low relapse rates.
• 80% of T2DM patients experience improved blood sugar control, often reducing or eliminating diabetes medication.

3.Laparoscopic Sleeve Gastrectomy with Duodenojejunal Bypass (LSG-DJB)

• Combines sleeve gastrectomy + bypass of the duodenum and part of the jejunum.
• Enhances gut hormone (GLP-1) secretion, improving insulin sensitivity.
• Highly effective for treatment-resistant Type 2 diabetes; some patients can discontinue diabetes medications.