I was sleeved 14 years ago and then got a revision 4 months ago. With my sleeve, I would get the foamies (hyper-salivation), my forehead would sweat, or my nose would start running (or all 3). Now, with with my bypass, if I forget I had a surgery and try to eat like a regular person, I get nauseous, my stomach makes SUPER LOUD noises, I'll feel pain, and sometimes have to run to the bathroom (dumping syndrome). A lot of people think this happens when you eat the "wrong" foods (super sugary, super greasy), and they're right. BUT, it ALSO happens if you eat too much, or even just too fast. You could be eating a super healthy, super small amount of food, but if you eat it too fast and don't chew it down to mush (like people at work who have really short lunch breaks), you'll still experience these things. As time goes by, we start to forget to take our time to eat, to really chew our foods to a paste before swallowing, or to wait a while after eating to drink something. The longer it's been, the more we forget. Sometimes, we need to reset our eating habits back to taking a full 30 minutes to eat, to eat healthy foods again, to over-chew our food, and to wait at least 30 minutes to start back on fluids.