The SADI-S Procedure
SADI-S Weight Loss Surgery | A Modern Path to Health
If you have been researching weight loss options and feel that you need a more powerful metabolic tool, the SADI-S (Single Anastomosis Duodeno-Ileal Bypass with Sleeve) might be the answer you’ve been looking for. Dr. Garth Davis provides this advanced surgical option for patients in Houston who are ready to take a decisive step toward lasting wellness. As a leader in bariatric and metabolic surgery, Dr. Davis combines technical excellence with a compassionate, patient-centered approach. Our goal is to ensure you feel educated, supported, and empowered throughout your entire transformation.
Understanding the Revolutionary SADI-S Procedure
What is the Sadi-S (Single Anastomosis Duodeno-Ileal Bypass with Sleeve Gastrectomy) Procedure?
The SADI-S, or Single Anastomosis Duodeno-Ileal Bypass with Sleeve Gastrectomy, is often viewed as an advanced evolution of the traditional Duodenal Switch, offering powerful and lasting weight loss with a streamlined surgical approach. The procedure works through three complementary mechanisms: it begins with a sleeve gastrectomy, reducing the size of the stomach to limit food intake and promote earlier fullness; it then reroutes a portion of the small intestine, decreasing the absorption of calories and fats; and finally, it creates a significant metabolic reset by altering gut hormones that regulate hunger, blood sugar, and insulin sensitivity. These hormonal changes can dramatically improve or even reverse Type 2 diabetes while helping patients feel less hungry and more satisfied, making SADI-S an effective option for those seeking both weight loss and metabolic health improvement.
How the Procedure Works
The Sleeve Step: First, the stomach is shaped into a slender tube (sleeve), reducing its capacity.
The Bypass Step: The small intestine is measured and "looped" to the beginning of the small intestine (the duodenum).
The Single Connection: Unlike the traditional Duodenal Switch which requires two connections (anastomoses), the SADI-S only requires one. This simplifies the surgery and reduces the risk of long-term complications like internal hernias.
Hormonal Shift: By bypassing a larger section of the intestine than a standard bypass, the SADI-S triggers a very strong hormonal response that suppresses appetite.
What to Expect Before, During, and After Surgery
Before:
With Dr. Davis, the process starts by getting to know you, your health history, your goals, and what you hope this journey brings. You’ll complete a few medical tests (such as blood work and possibly an EGD), review a simple nutrition plan, and talk through what realistic progress looks like. We take our time and make sure every question you have is answered.
During:
The procedure itself is minimally invasive and uses advanced robotic and laparoscopic surgical techniques. The SADI-S is done under general anesthesia. Most surgeries take about 1–2 hours. Our team stays closely connected to you throughout the entire process so you feel safe and supported.
After:
Most SADI-S procedures are performed on an inpatient basis, allowing patients to return home within 1–2 days of surgery once they are hydrated and comfortable. From there, patients typically begin a gentle, guided transition to new foods over the coming weeks. Follow-up visits focus on nutrition, vitamin support, and helping you ease back into comfortable movement. Our team stays with you well beyond surgery supporting, encouraging, and walking alongside you as your health continues to evolve.
Who is a candidate?
You may be a candidate if one of these is true:
BMI ≥ 40 or BMI 35–39.9 with serious health issues like type 2 diabetes or sleep apnea.
You’re ready to follow lifelong diet and lifestyle changes after surgery.
The best way to know is a private consultation with Dr. Davis. We review your health, tests, and goals and explain options without pressure.
Longterm Benefits of the SADI-S Procedure
The SADI-S offers some of the highest weight loss and health improvement outcomes in bariatric medicine, making it a powerful option for patients seeking lasting results. Many individuals experience superior weight loss, often losing a higher percentage of excess weight compared to standard sleeve gastrectomy or gastric bypass procedures. It is also known for having one of the highest rates of Type 2 diabetes remission, thanks to its significant metabolic effects. The procedure’s profound hormonal changes help with appetite control, reducing cravings and “food noise,” while the combination of restriction and malabsorption provides a strong defense against long-term weight regain. Beyond the numbers on the scale, patients often report an improved quality of life, including better sleep, increased energy, and the ability to stay active and fully present with family and daily activities.
Am I a Candidate for Life-Changing Weight Loss?
Get to know
Dr. Garth Davis, MD
Dr. Garth Davis is a nationally recognized, board-certified bariatric and general surgeon with over 30 years of experience helping patients transform their health. As a published author and thought leader in the field of weight loss and nutrition, Dr. Davis has dedicated his career to making sustainable, healthy living more attainable for everyone.
After decades of performing weight loss surgery and guiding patients through life-changing results, Dr. Davis created The Davis Method, a comprehensive approach to weight management that blends surgical expertise, medical weight loss options like GLP-1s, and personalized lifestyle strategies. This patient-centered method goes beyond quick fixes, offering real solutions for long-term success in weight loss, improved health, and a better quality of life.
With Dr. Davis, patients gain access to one of Houston’s leading weight loss experts, whose unique method is designed to help individuals achieve their goals with expert guidance every step of the way.
Explore Surgical and Non-Surgical Solutions for Health and Weight Loss with The Davis Method
Weight Loss Surgery
Explore weight loss surgery options with Dr. Davis, including sleeve gastrectomy, gastric bypass, SADI, and weight loss revision procedures tailored to your health goals.
Weight Loss Medication
Discover non-surgical weight loss options with Dr. Davis, including GLP-1 medications like Ozempic®, Wegovy®, and Mounjaro® to help you achieve sustainable results.
General Surgery
Receive expert general surgery care with Dr. Davis for procedures like umbilical, inguinal, or hiatal hernia repair. Each step personalized to restore your health and enhance your life.
Contact Us Today!
We serve patients across Houston and nearby cities (Katy, Sugar Land, The Woodlands). Ask us about parking, financing, and our informational sessions for new patients.
Dr. Garth Davis and The Davis Method are affiliates of TLC Surgery
