Weight Loss Surgery Clinic
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Why does Weight Loss Surgery Work?

Why is diet often deemed to fail?

Many techniques are available to lose weight, the most common one being dieting. The success rate, however, has often proved to be frustrating especially in the long run. With diets, people may lose weight initially, but hardly anyone keeps it off.

Why not? The reasons are complex. One of the main reasons seem to be that, when the body realizes that it is going on a low-calorie diet, it assumes that a famine period is underway. Our body, still programmed to store fat when food is scarce, will then become more efficient at keeping the calories, causing faster weight gain once regular diet is resumed.

Recent studies (2009/2010) have even demonstrated the role of appetite hormones found in the stomach that, triggered by low food intake, induced appetite and weight gain after a period of starvation.

People with overweight often find themselves hungrier after a diet and tend to eat more.



Why does Weight Loss Surgery work?

As explained in a previous page on the different surgical procedures, weight loss surgery is mainly achieved by dividing the stomach in two parts, reducing its size and/or creating a short cut that will divert the food from it. Bariatric surgery is effective because the amount of food a patient can intake is decreased and/or the amount of calories and fat the body can store is reduced.

This, however, is not the end of the story…. New studies suggest that another mechanism is at work, with a trivial role in weight loss.

It was pointed out that weight loss surgery patients, especially those who underwent gastric bypass, were very likely able to sustain a long term weight loss. Scientists found out that the operation, by altering the stomach, also sharply reduced the production of the hunger-related hormone, the "ghreline" hormone, produced in the bypassed area of the stomach. According to the research team, because the cells in the stomach producing the ghreline hormone are in the stomach part which is not used anymore, they become inactive since not in contact with food anymore.

This is the reason why patients who receive a gastric bypass mostly experience a significant drop in their appetite.

The decrease in appetite is maintained over time which therefore leads to permanent weight loss.



Why does Weight Loss Surgery work on decreasing diabetes?

Medical research has proven that, with weight reduction surgery, type 2 diabetes often disappears, sometimes within days of surgery. Statistics show that diabetes improves or completely resolves in 86.6% of all patients following Weight Loss Surgery.

These conclusions are not the result of weight loss alone, however. Researchers assume that rerouting the intestine, as in the gastric bypass, stimulates the production of a hormone that regulates the blood glucose.

The change in the body's metabolism, as a result of hormonal changes, is certainly a major reason for the success of bariatric surgery for type 2 diabetes.

Some scientists predict that Weight Loss Surgery might become a treatment to help overweight people cure the type 2 diabetes.