Comparison of Weight Loss Surgery Methods

Pros and cons of each type of weight loss surgery methods are outlined below. Dr. Darido will be happy to go over these in full detail at your initial consultation.


Gastric Bypass


Lap Band

Duodenal Switch (DS)

Success Rate

High High low High


Average Average Minimal High

Hospital Stay

1 to 2 nights  1 to 2 nights  same day surgery 2 nights

Time off work

2 to 6 weeks 2 to 6 weeks 2 to 6 weeks 2 to 6 weeks

Gut Hormones 

Favorable change Favorable change no change Favorable change


Decreased Decreased Increased Decreased

Foreign Objects

none none silicon band none

Technical Complexity

less technically complex than DS Simpler operation than a bypass Lowest complexity Highest complexity

Leak rate

less than 1% less than 1 % Almost zero 2 to 3%


Reversible Irreversible Reversible Reversible

Vitamin Supplementation

life-long life-long life-long life-long

Long-term complications

Internal Hernia or marginal ulcer Almost none Band erosion or slippage Severe Nutrient and Vitamin defeciencies, ulceration, diarrhea

Overall Complication rate

< 1 % < 1 % < 1 % 2 to 4 %

Diabetes Resolution

Very Effective Very Effective Least Effective Most Effective