I would not be that surprised, while reading it the first thing that came to mind.. someone who has WLS is desperate, are we not? We have tried everything, some people their whole lives. Finally, they are doing something major, last attempt.
And if it doesn't work? I can see someone who has a history of instability or hopelessness, feeling like that's the last straw.
Just my 2 cents. If Lap-band® doesn't work (which it is thus far!), I would do RNY. If RNY didn't work, I wouldn't be suicidal. And honestly if I can just stay below the weight that makes my back hurt (which seems like around 295lb was the cut off), I'm a happy camper.
Everything else is gravy.

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