Before you have bariatric surgery, you need to be aware of the issue of "dumping." Oftentimes food passes through the system so quickly that you get no nutritive value from it; this is especially the case with carbohydrates. The result can be weakness and nausea.

Because of the nutritional issues that often result from bariatric surgery, be aware that you'll need to take vitamins and mineral supplements on a regular basis after your surgery. Otherwise, illnesses like nutritional deficiencies and osteoporosis may result.

Sweets will be worse for you after bariatric surgery than they were before. Because of the way the stomach size is limited, it becomes difficult for patients to metabolize sugars. Any sugar intake at all will most likely make you feel ill and weak, and may cause you to faint.