Which of the following is a common complaint after a gastric bypass?

The correct choice is fatigue and dizziness after meals. After gastric bypass surgery, patients often experience changes in how their bodies respond to food intake due to the altered digestive system. The most common reason for fatigue and dizziness after eating is related to the phenomenon known as "dumping syndrome." This occurs when food, especially high-sugar foods, move too quickly from the stomach into the small intestine. Symptoms can include weakness, sweating, dizziness, and fatigue shortly after eating, particularly if the meal is not well-balanced or if it is too large for the smaller stomach pouch created during the surgery.

While a weight loss plateau can occur as the body adjusts to the new weight and changes in metabolism, it is not an immediate complaint after the surgery. Frequent headaches could arise due to dehydration, caffeine withdrawal, or other post-operative factors but are not as directly associated with the surgery itself. Increased appetite might vary from individual to individual and is not a typical complaint following gastric bypass, as most patients experience a decreased appetite due to the smaller size of the stomach. Understanding these connections helps deepen the knowledge of the physiological changes that occur after such a significant surgical intervention.