What condition occurs when part or all of the stomach is removed, affecting digestion?

The condition that occurs when part or all of the stomach is removed, leading to significant changes in digestion, is known as Dumping Syndrome. This syndrome commonly develops after surgeries such as gastric bypass, where the stomach's capacity is reduced or altered. When food passes too quickly from the stomach to the small intestine, it can lead to a range of symptoms, including nausea, cramping, diarrhea, and feelings of fullness after eating only a small amount of food.

Dumping Syndrome highlights the importance of the stomach's role in digestion, as it regulates the speed at which food enters the small intestine. When this process is disrupted, it can lead to malabsorption and nutritional deficiencies. This condition is an essential consideration for individuals who have undergone stomach surgery and impacts their dietary management and lifestyle choices post-surgery.

In contrast, the other conditions listed, such as gastric reflux, irritable bowel syndrome, and celiac disease, involve different mechanisms and symptoms not directly related to the surgical removal of stomach tissue and its immediate effects on digestion.