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Bariatric Surgery Program in Arizona

Achieving Lasting Weight Loss: How Bariatric Surgery Works

Bariatric surgery offers a pathway to significant weight loss for individuals with obesity by making strategic changes to their digestive system. These surgical interventions typically work in one or more ways:

  • Stomach Size Reduction: Limiting the quantity of food a person can comfortably eat.
  • Altered Nutrient Absorption: Modifying the digestive process to absorb fewer calories and nutrients.
  • Dual Mechanism: Utilizing both methods for comprehensive results.

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The gastric bypass procedure creates a small stomach pouch and connects it directly to the small intestine, bypassing a portion of the digestive tract. This reduces calorie and nutrient absorption and promotes hormonal changes that increase satiety, suppress hunger, and may reverse Type 2 diabetes.

How it Helps You:

  • Reduces the number of calories and nutrients absorbed.
  • Increases feelings of fullness and reduces hunger.

The gastric bypass procedure creates a small stomach pouch and connects it directly to the small intestine, bypassing a portion of the digestive tract. This reduces calorie and nutrient absorption and promotes hormonal changes that increase satiety, suppress hunger, and may reverse Type 2 diabetes.

How it Helps You:

  • Reduces the number of calories and nutrients absorbed.
  • Increases feelings of fullness and reduces hunger.


Gastric Reduction Duodenal Switch (often abbreviated as BPD/DS) is a type of combined weight loss surgery. It's considered both:

  • Restrictive: Because it reduces the size of the stomach, limiting the amount of food a person can eat.
  • Malabsorptive: Because it bypasses a significant portion of the small intestine, reducing the amount of calories and nutrients the body absorbs.

How it Works:

With this procedure, the food empties directly into the duodenum, bypassing about ¾ of the small intestine. This causes the body to absorb fewer calories and nutrients.

Duodenal switch surgery affects hormones in the gut to reduce hunger, increase satiety and help control blood sugar to effectively treat diabetes.

Gastric Reduction Duodenal Switch (often abbreviated as BPD/DS) is a type of combined weight loss surgery. It's considered both:

  • Restrictive: Because it reduces the size of the stomach, limiting the amount of food a person can eat.
  • Malabsorptive: Because it bypasses a significant portion of the small intestine, reducing the amount of calories and nutrients the body absorbs.

How it Works:

With this procedure, the food empties directly into the duodenum, bypassing about ¾ of the small intestine. This causes the body to absorb fewer calories and nutrients.

Duodenal switch surgery affects hormones in the gut to reduce hunger, increase satiety and help control blood sugar to effectively treat diabetes.


The sleeve gastrectomy, commonly known as gastric sleeve, is a minimally invasive weight loss surgery that creates a smaller, banana-shaped stomach, restricting food intake and promoting hormonal changes that increase satiety and suppress hunger. This procedure can also lead to the reversal of Type 2 diabetes in many cases.

How it Helps You:

  • Limits the amount of food you can eat.
  • Reduces hunger and increases feelings of fullness.

The sleeve gastrectomy, commonly known as gastric sleeve, is a minimally invasive weight loss surgery that creates a smaller, banana-shaped stomach, restricting food intake and promoting hormonal changes that increase satiety and suppress hunger. This procedure can also lead to the reversal of Type 2 diabetes in many cases.

How it Helps You:

  • Limits the amount of food you can eat.
  • Reduces hunger and increases feelings of fullness.


Medical (non-surgical) weight loss offers a powerful, patient-centered approach to managing weight and improving health, all without surgery.

How it works:

  • Individualized Care: Your journey is completely individualized, with a plan tailored to your specific health history, goals, and lifestyle.
  • Expert Medical Supervision: Care is provided under the careful guidance of physicians, registered dietitians, and other healthcare professionals.
  • Addressing Underlying Health Issues: Our approach effectively identifies and manages health conditions that may impact your weight.
  • Strategic Medication Use: Advanced weight loss medications (like GLP-1 agonists) can be strategically incorporated to enhance appetite control and improve metabolic function.
  • Significant Health Improvements: Expect transformational results, including improvements in blood pressure, blood sugar (potentially reversing type 2 diabetes), cholesterol, reduced joint pain, and alleviated sleep apnea.

Weight loss medications have been clinically proven to support 5-15% body weight loss within a 6-12 month timeframe. These options include both oral tablets and injectable treatments.

Medical (non-surgical) weight loss offers a powerful, patient-centered approach to managing weight and improving health, all without surgery.

How it works:

  • Individualized Care: Your journey is completely individualized, with a plan tailored to your specific health history, goals, and lifestyle.
  • Expert Medical Supervision: Care is provided under the careful guidance of physicians, registered dietitians, and other healthcare professionals.
  • Addressing Underlying Health Issues: Our approach effectively identifies and manages health conditions that may impact your weight.
  • Strategic Medication Use: Advanced weight loss medications (like GLP-1 agonists) can be strategically incorporated to enhance appetite control and improve metabolic function.
  • Significant Health Improvements: Expect transformational results, including improvements in blood pressure, blood sugar (potentially reversing type 2 diabetes), cholesterol, reduced joint pain, and alleviated sleep apnea.

Weight loss medications have been clinically proven to support 5-15% body weight loss within a 6-12 month timeframe. These options include both oral tablets and injectable treatments.

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Real People. Real Results. 

From Diabetes Struggle to Active Grandmom: Kathy's 70-Pound Journey

Kathy Misiewics, 77, struggled with diabetes and weighed 200 pounds before her sleeve gastrectomy at Dignity Health. Six years later, she's maintained a 70+ pound weight loss, enjoying travel and shopping.

"Shopping for clothes is fun again," says the retired nurse. While she still has diabetes, her blood sugar, A1C, and blood pressure are now normal. Kathy credits consistent check-ups with the Dignity Health team, exercise, and healthy eating for her success.

Her motivation extended beyond health: "I wanted to be alive to enjoy our family." This great-grandmother's journey highlights renewed vitality and family connection.

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From 468 Pounds to 10Ks: Sams' Journey of Transformation

Samuel Martinez, 29, once weighed 468 pounds, making simple tasks like walking to his front door a battle. Diagnosed with sleep apnea, high blood pressure, and pre-diabetes even after an initial 130-pound weight loss, he sought a lasting change.

In September 2023, Martinez underwent duodenal switch surgery at Dignity Health. Just two years later, the 6-foot Martinez is a lean 200 pounds and an enthusiastic runner, regularly competing in 5K and 10K races. He shares, "Before the surgery, I could barely walk from my car to my front door. Now, I can run a mile in 12 minutes."

Beyond the physical transformation, Martinez's quarterly meetings with the program's dietician and the support team have reshaped his relationship with food. This holistic approach helped him reverse his pre-diabetic status. He praises the program's ongoing commitment, stating, "They don’t abandon you — and they hold you accountable." This comprehensive care propelled Samuel from immobility to an active, healthy life.

dignity health bariatric surgery patient sam martinez

Meet the Team

At Dignity Health, we emphasize  weight loss as a journey. It starts  with understanding what obesity  does to your body.

Our team of surgeons, nurse  practitioners, dieticians, patient  advocates and mental health  professionals stay with you for  every step.

 

 

Our Comprehensive  Care Includes: 

• Introductory education session 

• Physician consultation and  continuous medical care 

• Nutrition counseling 

• Psychological support 

• Ongoing peer support groups • Health and wellness education 

Dignity Health Weight Loss Center Locations

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