Need help finding good meal plan to follow ...
Marilyn,
You've done a fantastic job losing from 750 pounds to your current weight! I think your doctor may be referring to the Duodenal Switch, and judging by the comments of malnutrition and diarrhea, he's spouting the same tired old arguments that most uninformed surgeons spew out.
Please PM me if you have any questions about the DS, or better yet, come to the DS board!
Good luck with whatever you choose!