Dumping ?

Fat doesn't  cause dumping, only sugar. Fat, or anything, can cause some gastric distress that some people confuse with dumping.

30% is the figure most often seen for RNY who dump. My surgeon is emphatic that all would dump, it just takes a lot more sugar for some.

I eat full fat everything. I get my protein in first, but don't worry about fat, just overall calories. I have small amounts of sugar now and then, but not until after I reached my goal. But I never tested the waters, as some do, to see if they'll dump.

Actually, fat does cause dumping; it may not cause dumping in you.  According to at least one source, WebMD "

Causes of Dumping Syndrome

After gastric surgery, it can be more difficult to regulate movement of food, which dumps too quickly into the small intestine. Eating certain foods makes dumping syndrome more likely. For example, refined sugars rapidly absorb water from the body, causing symptoms. Symptoms may also happen after eating dairy products and certain fats or fried foods."

At least educate yourself before you make a sweeping generalization such as "Fat doesn't cause dumping, only sugar".  That's misleading and inaccurate and could cause folks who previously thought fat wouldn't cause it to eat fat and find out the hard way.  Dairy such as milk will also cause me to dump (and nine years in, I know what dumping feels like).  Everything new is trial by fire. The pyloric valve is gone so regardless of  what it is, if you overwhelm your gut with even too much water, you could dump.  Eating full fat everything is your choice. Telling people they can eat anything but sugar without dumping is irresponsible JMHO

Fats do not cause dumping. If you have a reaction to dairy, it may be because of the lactose, which is a sugar, or you are just lactose intolerant, which is very common.

Everyone seems to think that every stomach upset is dumping. It is not. Dumping is a very specific thing. You will not get it from protein, which some seem to think, or fat.

GRIM-well said. It took me probably 5 years before I could tolerate any lactose, even a little bit...even then I wasn't much fun to be around...or to be BEHIND...I could clear a room in 10.2 seconds...

Tis true how WLS gets blamed for EVERYTHING...every cramp/sneeze/etc..we forget we CAN get sick from other things...

 Yes Grim you are right 100%, perhaps someone needs to do some more reading...........................

Dumping syndrome is the common term for rapid gastric emptying. Because the stomach in RNY patients lacks a pyloric valve, certain foods can empty rapidly into the small intestine. When this food has a very high number of molecules per gram -- sugars and simple carbohydrates -- it creates a condition of high osmolarity, which pulls fluid from other parts of the body into the intestine. The shift in fluid creates the symptoms of dumping. Sweating, nausea, rapid heartbeat, sometimes diarrhea and vomiting, etc. It is not distress. It is, oh god, I want to die.

Other food molecules are too large to induce this reaction, and do not cause dumping.

Reaction to dairy is lactose intolerance, and is not dumping.

Reaction to fats is a function of your rerouted intestines and bile. It is not dumping. Ask a DSer about reaction to fats. Not dumping.

Foamies are most often confused with dumping. Not dumping.

You should do some more research, and you will find that you are wrong. Not every tummy ache is dumping.

Don't believe everything you rwad on the internet.

Thank you, Grim - very important to debunk dumping myths - we see too much of that on these boards!