I asked my sister about her gastric bypass that she had and why she didn't opt for the lap band or some other procedure where they didn't seperate the two halves and she told me that the reason she wanted the actual seperation was because the band had been known to break or roll down causing the stomache to go back to its original pre-op size.

Didn't remember if this had been mentioned as a factor in choosing it over the normal surgery but in case it wasn't it's something else to consider.

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