Question:
do u absorb all the food calories you eat after gastric bypass

   — Jackettx (posted on August 15, 2009)

August 15, 2009
No. That is the PURPOSE of the Gastric Bypass. Unfortunately, a SIDE EFFECT is that you do not get the full NUTRITION of everything you eat either. This means that you do not get all the vitamins and minerals that you would have gotten prior to the bypass. This is true also for the Duodenal Switch. It is not true for the Lap-Band and the Vertical Sleeve Gastrectomy. THOSE procedures are strictly restrictive in nature. You do not consume as many calories as you did before, but everything that you DO consume is used by your body. It is not flushed out with your waste as it is in the RnY and the DS.
   — hubarlow

August 15, 2009
I have asked this question to both my surgeon and to Dr. Garth Davis (of Big Medicine TV show) at an OH meeting back in June. They both said you still absorb about 85-90 percent of the calories you eat. It's nutrients that you don't absorb nearly as well, not calories.
   — rkurquhart