Weight loss operations divided into 3 categories:
1. Restrictive procedures make the stomach smaller to limit the amount of food ingestion.
2. Malabsorptive methods reduce the intestine that comes in contact with food so that the body absorbs smaller amount of calories.
3. Combinative operations get benefit of both restriction and malabsorption.
Restrictive procedures are the simple method of loosing weight, it is based on the reducing the amount of food you eat at once. The result is that you start to eat less. Restrictive weight loss surgery does not interfere with the normal absorption of food; the surgeon just makes an upper stomach pouch smaller. The pouch, with a capacity of around 1/2 to 1 oz. (15 to 30 ml), has a connection with the rest of the stomach through an exit known as a "stoma." In a pliant patient, the reduced stomach capacity, together with changes of demeanor, can result persistently lower caloric intake and solid weight loss.
The patients must adjust to the strict specific dietary during the recovery period, guiding instructions and restrictions prescribed by their bariatric surgeon .Patients should adapt to their new system of diet. During every meal they are restricted to consuming approximately 1/2 to a full cup of food, before they feel uncomfortably full. Patients who get the best results from a restrictive weight loss procedure have already learned to eat slowly, with a little amount of food and avoid drinking too many fluids, particularly carbonated beverages. In case the patient doesn't follow these prescriptions, he can stretch the stomach pouch or the stoma outlet and defeat the purpose of the surgery.
If you will also abuse constant snacking and drinking high-calorie and high-fat liquids, the effectiveness of a restrictive procedure can reduce considerably. Failure to achieve the expected level of weight loss is usually depends on the fact that patient have failed to fulfill the recommended dietary and behavior modifications, such as increased exercise and regular support group attendance. A number of of the restrictive approaches discussed above have not always accomplish the expected surplus weight. That's why weight loss procedures, known as malabsorptive procedures, were created to work in combination with restrictive approaches. Some of these techniques involve a bypass of the small bowel, thus limiting the absorption of calories. Consequently the malabsorptive or malabsorptive/restrictive procedures have lead to the general increase in the loss of excess weight. The lengthening of the small bowel bypass usually increases the risk of complications and side effects. You and your bariatric surgeon must agree on the risks, advantages and disadvantages of the type of weight loss surgery you choose.
| 
