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Weight Loss Surgery

Weight loss surgery at Baystate is not just an operation. It is a total approach to reducing your weight and improving your health. We’ll help you overcome the medical, social, and emotional factors that contribute to weight gain, as we also prepare you for successful bariatric (weight loss) surgery, whether it’s a gastric bypass or sleeve gastrectomy surgery.

You can count on our weight loss experts to help you through every phase of your journey – from pre-operative education and planning, to post-operative counseling and nutrition support.


Baystate Medical Center is an accredited center for weight loss surgery. That means the American Society of Metabolic and Bariatric Surgery and the American College of Surgeons has accredited Baystate as a Center of Excellence after reviewing our procedures, staff, results, and facilities. Our multidisciplinary approach to your care along with our minimally invasive surgery techniques mean you can expect a safe and successful surgery.

The team of weight loss experts at Baystate Health includes: 

  • Surgeons
  • Physician assistants
  • Dietitians
  • Medical doctors
  • Psychologists
  • Medical assistants and nurses

How to start the process

Weight loss surgery is an option for people who are severely obese and cannot lose weight with diet and exercise alone. Improving your lifestyle, eating right, and staying active remain essential. 

If you are interested in weight loss surgery at Baystate Health, you will complete an in-depth screening process. We want to make certain you are a good candidate for weight loss surgery and that you know what to expect.

The screening process begins with a general information session and continues with appointments with a physician assistant, a dietitian, a surgeon, and a psychologist.

You are also required to attend at least three support group meetings before surgery.

Laparoscopic Gastric Bypass (Roux-En-Y)

In laparoscopic gastric bypass surgery, the surgeon makes small incisions in your abdomen. A small camera and the tools needed to perform the operation are inserted through these incisions.

Then, the surgeon creates a small pouch from your stomach and connects this pouch directly to your small intestine.

After your surgery, any food you swallow will go into this small pouch of stomach and then directly into the small intestine. Food then goes around—or “bypasses”—a part of your original stomach and small intestine so that a portion of calories and nutrition are not absorbed.

You can expect to lose up to 60% your excess weight in the first two years after gastric bypass.

Laparoscopic Sleeve Gastrectomy

During a sleeve gastrectomy, about two-thirds of your stomach is removed. It leaves a thin tube-shaped – or “sleeve”-shaped – stomach.

After surgery, food enters this sleeve. You will feel full after less food and you will consume fewer calories.

You can expect to lose up to 55% of your excess weight during the first two years after the sleeve gastrectomy.

Changes in Your Diet After Weight Loss Surgery

What you eat before and after surgery is a very important part of your weight loss journey. Your dietitian will help you understand the diet in detail.

Immediately after surgery, you will move through five stages of eating – starting with liquids to soft foods to solids. These stages will ensure that you are eating safely and getting the right nutrition.

You will also be required to take complete multivitamins and calcium supplements every day after your surgery, for the rest of your life.

The Baystate weight loss team, as well as our support groups, can guide you through these lifestyle changes.

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