Question:
Since some people dump after eating high fat food,Dont we absorb fat ?

I read where RNYs cant absorb fat soluble vitamins does mean we dont absorb fat?    — Connie Z. (posted on December 28, 2001)

December 28, 2001
My understanding of dumping isn't in the absorobing, but the introduction of the offending food. Dumping being very different than diarrhea, it takes place when the offending substance passes thru the pouch & hits that intestine, totally undigested, totally unbroken down for absorption and in essence, "raw". Intestines were designed to absorb & transport, not to take the fresh food & break it down FIRST (digest) and then try to absorb it, WHILE trying to transport. We're putting a huge load at once on that entry into the intenstinal system. It's the lack of digestion (breaking down chemically) that causes the malabsorption. Although the food has a chance to "mingle" with the digestive juices for a longer "trip" down the common channel of a proximal RNY than it does with distal RNY, the food still never falls into a "vat of acid" again, so never will be fully digested and processed through the duodenum in the usual way. The physiology book lists 8 nutritional elements, protein, iron, calcium, A, D, E, zinc & B12 PLUS some fats/oils AND complex carbs as being not digested without that old stomach/duodenum visit. It's a mixed blessing for sure. I've never dumped on fats, but most definitely on sugar and still do, long post-op. Some dump on ONE Dorito!
   — vitalady

December 28, 2001
huh , thanks for that explanation. I didn't understand that. Question - if the vitamins don't absord the usually way [with juices] how do we get vitamins and or do we have to take double ... triple, the amount than normal?
   — Lynn W.

December 28, 2001
i dump big time on the teeniest bit of sugar. i have used regular mayo no prob. so sugar seems to be my problem right now. i hope thats all. it aint fun. open rny/silastic band 11 days post op
   — sheryl titone

February 28, 2003
True dumping is caused when sugars hit the intestines and cause the pancreas to produce a large amount of insulin. That is why people get the shakes, sweats, runs, tired.... This is because our body can not process these sugars before they hit the small intestines after gastric bypass surgery. Now FAT will cause loose bowels, the runs, and this is because fat once ingested becomes a liquid and literally flows right through our system pushing out all that we have ingested. This has been happening to me since I had my gall bladder removed 6 years ago. I am 4 weeks post op on Monday 3/3/03 and have not had either of the above happen. Best of luck. Jamie :)
   — Jamie Ellyn M.