Bariatric surgery can help people in many ways.
- The average weight loss of medical (no surgery) attempts is only 6% at 10 years.
- Weight loss with surgery can be as high as 77% at 12 months. As high as 60% at 5 years.
- Type 2 diabetes is resolved in 77% of patients. It is improved in 86%.
- High blood pressure is improved in 79% of patients. Blood pressure goes back to normal in 62% of patients.
- High cholesterol is lowered in 70% of patients.
- Obstructive sleep apnea is resolved in more than 85% of patients.
- The risk of this surgery is now lower than medical tries at weight loss. The risk of death is only 0.1%.
Who qualifies for bariatric surgery?
People with a BMI > 35 and high-risk weight-related health problems. This includes:
- diabetes
- sleep apnea
- high blood pressure
- fatty liver disease
- GERD
- high cholesterol
People with a BMI > 40
- Learn more about your bariatric surgery care team.
What is bariatric surgery?
There are two types of bariatric procedures performed at University of Iowa Health Care:
- Restrictive – the stomach is made smaller. This limits food intake.
- Malabsorptive – A part of the intestines are bypassed. This limits the number of calories the body can absorb.
Restrictive
Sleeve Gastrectomy
- Up to 55% excess body weight loss at 5 years
- Can help resolve some weight-related health problems

Malabsorptive
Roux-en-Y Gastric Bypass
- Both malabsorptive and restrictive
- Developed at UI Health Care. Has been done for over 50 years
- Up to 77% excess body weight loss
- Most helpful to resolve weight-related health problems

Weight loss surgery can help resolve many related health problems.
Which surgery is best for me?
You and your surgeon will discuss the best procedure for you.

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How does it work? |
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Stomach |
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Small intestine |
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Pyloric valve |
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Average operating time |
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Average hospital stay |
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Average time off work |
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Average weight loss |
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Surgery advantages |
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Surgery disadvantages |
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