The Physiological Effects of Gastric Bypass

Gastric bypass is a surgical operation that can bring about significant weight loss. Basically this procedure involves splitting the stomach into two parts, with the upper portion being smaller to accommodate a meal. In this operation, the stomach is significantly reduced so that it enables the individual to consume only small portions of food at a given time. Eventually he will start losing weight just because his calorie intake each time he eats is relatively lower due to his smaller-sized stomach.


There are several ways to go about gastric bypass, but they all work to produce the same end - results. The purpose of this surgical operation is to shrink your stomach by at least 90%. Normally a human stomach can stretch to up its maximum capacity which is almost 1000 ml. But after gastric bypass the stomach can only handle around 15 ml instead.

The stomach is composed of muscles that can readily stretch. It stretches to accommodate the amount of food that you eat. Hence, the size of your stomach slowly increases as you consume more food each time you eat. Relatively more food is needed to completely fill your enlarging stomach. On this same premise, your stomach adapts to less food intake over a period by shrinking to a size that gets full faster.

Gastric surgery actually does the size reduction of the stomach for people who might be able to do it easily. Usually it is the least stretchable part of the stomach that is allowed to hold food consumption from then on. Your stomach can then be unable to stretch to the point that lets you take in more food than you actually need.

Usually, with just a few munches the body triggers the brain to send a signal that full sensation is achieved. However, many people tend to ignore this signaling trigger and continue eating instead. This problem is common among many overweight individuals. But once you have had a gastric bypass, and you go on eating beyond your stomach's capacity, you will most likely end up with stomach discomfort and even vomiting. It will be an instant lesson learned by your body that you need to limit your food intake relatively to your shrunk stomach.

The process may sound simple but there are several risks associated with gastric bypass. Yet in the end, its benefit in terms of weight reduction through a significantly reduced stomach is remarkable.