Reason for no drinking and eating at same time

I'm about a year and a half out from my RNY surgery and have a few basic questions that I never feel like I got answers. Does anyone know the reasons why for the following rules?

No drinking 30 min before, during or after eating.

No carbonation.

No soups, cereals and super mushy foods.

I've been following the rules, just always wondering if carbonation would do damage or what's the deal with avoiding it. Thanks!

After the RNY, you're no longer using your pylorus, the sphincter that keeps food in a normal stomach. (A normal stomach churns and breaks down food further, so it has to be able to hold it in until it's finished.) You now have a stoma, which is basically an always-open hole in your pouch. Drinking during or immediately after eating can wash your food through your stoma, making it possible for you to eat too much to causing you to become hungry again too quickly. I'm not certain what the logic is about not drinking for 30 minutes before eating.

There's IS no real reason not to have carbonation, once you're fully healed after surgery. It may make you VERY uncomfortable, but it will not---it CANNOT---stretch either your pouch or your stoma. Long before that sort of pressure could build up, you'd either burp or fart out the gas!

Soups, cereals, and mushy foods go back to the always-open stoma thing. That said, some successful RNYers DO eat these things occasionally. Cereals are very carby, so keep that in mind. However, as long as you track your food and don't excess your carb goal for the day, I don't know why you can't enjoy them occasionally.

Apparently drinking while eating works well to wash away all those bad calories.  I weigh 128lbs and still can't eat more then a cup of brown rice which is fully expanded and keeps me full for hours.  If drinking while eating was some real issue protein drinks that run right through us would be useless. I eat a healthy diet, keep my calories low and splurge on chocolate on occasion, and you can see by my nearly 9 years of profile pics I not only never regained but I am at my lowest weight now.

Thank you so much for that info! That's so helpful to understand and know what to guard against.

I agree with MsBatts 100%. My surgeons rule was no drinking 30 minutes before right out of surgery as the pouch capacity is so small you want to be able to eat. Some will say it doesn't make sense since liquids go straight through. That is correct it does go straight through but some of us still feel full after drinking, heck I still get full when I drink a lot. 

Thanks so much!

Here's the reason we do not drink for 30 minutes before or after eating, very clearly and simply illustrated in this 3 minute video made by a gastric bypass patient.  Best explanation ever.!

 http://www.youtube.com/watch?v=xR0VM3mnsgM

Thanks very much for sending the link!

There is no reason for not drinking right up 'til you start to eat.

The reason not to drink while eating or for 30 minutes after is because the liquid will wash the food out of your pouch, allowing you to eat a lot more.

The only reason for no carbonation is that it gives some people painful gas.  If it doesn't cause you discomfort, there is no reason to avoid it.

Thanks for all your help!