Not quite what you like!
The greatest risks of the gastric bypass diet come from not following the diet properly. If you eat too much or eat food that you shouldn't, you could have complications. These include:
•Dumping syndrome. This complication occurs most often after eating foods high in sugar or fat. These foods travel quickly through your stomach pouch and "dump" into your intestine. Dumping syndrome can cause nausea, vomiting, dizziness, sweating and eventually diarrhea.
•Dehydration. Because you're not supposed to drink fluids with your meals, some people become dehydrated. You can prevent dehydration by sipping 48 to 64 ounces (1.4 to 1.9 liters) of water and other low-calorie beverages throughout the day.
•Nausea and vomiting. If you eat too much, eat too fast or don't chew your food adequately, you may become nauseated or vomit after meals.
•Constipation. If you don't follow a regular schedule for eating your meals, don't eat enough fiber or don't exercise, you may become constipated.
•Blocked opening of your stomach pouch. It's possible for food to become lodged at the opening of your stomach pouch, even if you carefully follow the diet. Signs and symptoms of a blocked stomach opening include ongoing nausea, vomiting and abdominal pain. Call your doctor if you have these symptoms for more than two days.
•Weight gain or failure to lose weight. If you continue to gain weight or fail to lose weight on the gastric bypass diet, it's possible you could be eating too many calories. Talk to your doctor or dietitian about changes you can make to your diet.