Weight Loss (Bariatric) Surgery

Weight Loss surgery may be an option when diet and exercise haven’t worked for you or when you have serious health problems because of your weight. Gastric bypass and other weight-loss surgeries (Bariatric surgery) may limit how much you can eat or reduce your body’s ability to absorb nutrients or both.

All forms of weight-loss surgery are major procedures with potentially serious risks and side effects. Bariatric surgery requires the patient to make and maintain permanent healthy changes to their diet and to get regular exercise to help ensure the benefits and success of their surgery are long-term.

Be the Best Version of YOU!

Bariatric Surgery can be life-changing for those who want to lose weight. In addition to taking the weight off, there are many more health benefits that result from the surgical options available.

At Las Vegas Surgical Associates, we offer outstanding surgical outcomes and superior expertise in the treatment of obesity and all its related health problems.

Our surgeons take the time to educate, understand, and support you as you start on your journey to health and improved quality of life.

Obesity is not just a weight problem. Obesity is a complex, metabolic disease.

The risks of severe obesity outweigh the risks of metabolic/bariatric surgery for many patients.

Bariatric surgery is the most effective and long-lasting treatment for severe obesity resulting in significant weight loss and the improvement, prevention, or resolution of the many related diseases.

Gastric Bypass and Sleeve Gastrectomy are the two most commonly performed procedures.

Sleeve Gastrectomy Surgery

In a sleeve gastrectomy procedure, a portion of the stomach is laparoscopically removed to make the stomach smaller – roughly the size and shape of a banana.

Approximately 80% of the stomach is removed, leaving a tube-shaped stomach.

Benefits to sleeve gastrectomy:

  • Restricted amount of food/calories that can be consumed
  • Hormonal changes suppress hunger and reduce appetite

Gastric Bypass Surgery

A two-step laparoscopic procedure in which your surgeon makes changes to your stomach and small intestine to change the way they absorb and digest food.

  1. A small pouch (about the size of an egg) is created in the top portion of the stomach, dividing it from the rest of the stomach. The larger part of the stomach remains in your body, but no longer stores or digests food.
  2. The small intestine is also divided and connected to the new stomach pouch to allow food to pass. Food bypasses the rest of the stomach and is then redirected to an area farther down in your digestive system.

Gastric bypass aids weight loss by:

  • Restricting the amount of food that your stomach holds
  • Limiting the amount of calories and nutrients your body absorbs
  • Changing your gut hormones, which help you feel fuller faster & longer, contribute to appetite suppression, and the reversal of obesity-caused metabolic syndrome

Las Vegas Surgical’s Dr. Jiashou Jimmy Xu, MD is also the Medical Director of Weight Loss Surgery Center at St. Rose Dominican Hospital, Siena Campus in Henderson.

The video above profiles one of Dr. Xu’s Bariatric Surgery patients.

Who is a candidate?

In general, bariatric surgery could be an option for you if:

  1. Your body mass index (BMI) is 40 or higher or you’re more than 100 pounds overweight.
  2. Your BMI is greater than 35 and you have one or more serious weight-related health problems, such as type 2 diabetes, high blood pressure, severe sleep apnea, or heart disease.
  3. You’re unable to achieve a healthy weight loss sustained for a period of time with prior weight loss efforts.

Why choose us?

At Las Vegas Surgical Associates, we have a dedicated multidisciplinary team of experts that will guide you through the options and help you decide what’s right for you.

Our bariatric procedures are performed at accredited centers and have a low risk for complications.

Your bariatric care team will provide you with lifelong support to succeed and maintain a permanent healthy lifestyle including changes to your diet and regular physical activity.


“Aside from her surgical expertise, Dr. O'Neill was kind and compassionate. She has my highest recommendation!"

- Beatrice P.

"Dr. Caravella and his medical team bring exquisite knowledge, experience, and care."

- Leslie Ann I.

"We want to thank Dr. Xu for taking time out of your busy schedule to fit in our dad's surgery and doing it well. He is doing much better and we have you to thank for that. Thank you!"

- The Porja Family

"I cannot thank Dr. Patel enough. I want you to know you have given my life back to me. You are a wonderful surgeon and person."

- Laurie G.