After Roux-en-Y Gastric Bypass Surgery
You Are Not Allowed to Drink
with or 
Directly After Your Meals.
Why?
The rule is: No drinking with meals or for 30 to 60 minutes after each 
meal. But why?? 
After roux-en-Y gastric bypass surgery we are given the rule of not 
drinking with meals or for 30 to 60 minutes after a meal. It is an important 
rule, but do you understand why it is so important? "The RNY Rules" attempts to 
help you understand the reasoning behind specific rules set up by nutritionist 
and bariatric surgeons.
Before gastric bypass surgery you had the pyloric valve at the bottom of 
your stomach to keep food inside the stomach while it began the digestive 
process. As food was digested and ready enough to be released into the 
intestine, the pyloric valve (a trap door, really) would open and let a small 
amount of food out of the stomach and into the small intestine. Digestion would 
continue in the stomach, the trap door would open and a bit more food would be 
released. And on and on... This process can take 2 to 3 hours in a normal 
stomach.
After RNY gastric bypass surgery the pyloric valve is no longer part of the 
newly formed stomach pouch. It remains at the bottom of the stomach which is 
bypasses.... So we don't ever use the pylorus again.
With our new pouch we have to mimic the action of the pyloric valve 
manually and the only way to keep food in our pouch (which is basically a funnel 
now, with no trap door) we have to eat dense foods and not mix that food with 
liquid. The denser the food, the longer it can stay in the pouch. Food can stay 
in your pouch for up to 1.5 to 2 hours if you don't drink water. The minute you 
add water (or any liquid) to the mix, you are creating a "soup" that will 
quickly empty out of your pouch.
About 40% of the digestive enzymes our food needs to be broken down is 
contained in our saliva. Our pouch does not produce gastric acid (or 
hydrochloric acid) anymore, so the saliva enzymes are all we have to work with 
here... Which is another reason why need to chew, chew, chew really well. Once 
food gets to the pouch, those digestive enzymes go to work on the food to begin 
breaking it down (mostly carbohydrates). Our pouch doesn't churn as much as our 
old stomach used to, but there is still some movement with that well-chewed 
food. The longer it stays in the pouch, the more it is broken down and prepared 
for the intestines to do their work of grabbing nutrients from the food. If we 
wash the food out too quickly, the intestines can not as easily absorb the 
nutrients from the food we eat because it passes too quickly undigested. (This 
can also increase the risk of constipation and intestinal blockage.)
Of course with your pouch being empty you'll get hungry sooner. For new 
post-op gastric bypass patients, this isn't necessarily a big issue because the 
hunger hasn't returned yet. But for those further out from surgery, the hunger 
can be ravenous and you want to keep food in that pouch for as long as possible. 
That's why it's recommended that the further out you are from surgery, the 
longer you wait to begin drinking after meals (60-90 minutes).
SO... besides all that, there's the risk of stretching the stoma (the 
opening between the pouch and intestines). If you have dense food that has not 
begun to be digested in the pouch and you drink water you are FORCING that dense 
food to be pushed through the stoma prematurely. That opening is only about the 
size of a lady's index finger, but if you push food through the opening before 
it's ready to go, you'll eventually stretch that opening. This is FAR more 
worrisome than stretching your pouch. Once it's stretched it can become the same 
diameter as the pouch itself... essentially creating one big long tube that food 
can be packed into at meals. Basically a 20-foot long stomach.
This caution from surgeons is NOT a scare tactic or some random rule made 
up to torture gastric bypass patients. This is about biology and medical 
science. You now must manually do the work of the pyloric valve because you 
don't have one. And it's about preparing your food so your body has the best 
chance of absorbing the vital nutrients it needs for survival.
Since my RNY gastric bypass surgery almost 18 months ago, this is the one 
golden rule that I have follow with extreme dedication. I've lost 113 pounds and 
hunger is not a major issue for me. I truly believe this is a rule that I can 
easily follow for the rest of my life and because I understand the science 
behind the rule, I'm more willing to make it a priority
.
Written by Pam Tremble and posted HERE
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