I just wanted to drop you a note and say good luck on your surgery. I had the same procedure you are having and I am absolutely thrilled beyond belief!. I think the duodenal switch is by far the best surgery out there. I just read a study that was done on long term success of this procedure over the Roux-en-Y. They studied patients who had the procedure over the last 18 years and only one person had any significant weight gain, and even that was only 30lbs. The Roux had a 60% success rate for long term maintenance. They also did a controlled study on calorie absorption. Duodenal people were fed a 3400/day calorie diet over several days and their out put was tested (calories in minus calories pooped) and it was found that on average, they absorbed 58% of their intake. As long as we take our vitamins, there aren't many cases of deficiencies either.
Well I'm getting a bit long winded here. I can't help it, I'm just so happy I want to talk about it all the time. Best of luck to you! Remember, the post-op recovery sucks but it is soooooooo worth it!
Diane Cooper