One third of the Western population suffers "obesity" to some degree. It is the result of an excessive accumulation of body fat as a result of an imbalance between intake and energy expenditure due to the high caloric availability, which has launched preparations genetic mechanisms for food shortages that have led to increased disease .


     It is considered that genetic factors influence 70% in the onset of obesity, and only 30% is explained by environmental factors. Considering that the genetic load is unchanged, we think that increasing so fast the disease in developed countries is due to radical changes in "lifestyle and food", which pose a severe change in the energy equation: "more caloric intake and energy expenditure less".


      Patients with obesity are greatly impaired his health, and gradually deteriorate most of the organs and systems.


     Within the General Surgery and Gastroenterology, the "Obesity Surgery" changes the functional anatomy of the digestive system, modifying varied, complex and specific aspects, which by its conceptual and technical difficulties require special dedication of equipment or units multidisciplinary, which together act nurses, pediatricians, nutritionists, endocrinologists, psychologists and surgeons.


     With this surgery we get "regain lost health". We conducted a functional surgery on the digestive system, it is not because of cosmetic surgery as some believe is, though undoubtedly helps improve the image to reappear physical features from previous years that were erased, and somehow recover the social consideration damaged and esteem diminished by the disease. "The obese patient is a victim, not a culprit."


     Obesity is a disease of multifactorial origin, this complexity explains the need for a comprehensive information to make the momentous decision to undergo surgery, understand the technique chosen for each case, knowing the risks, and what everyone expected from "surgical intervention".


     Basically this surgery involves, first "shrink the stomach", and secondly, you can add or another procedure that "prevents fat absorption process." In addition bariatric surgery carries a "change in the process of releasing certain digestive hormones," starting up really surprising changes, such as, decreased appetite, satiety and recovery improvement or resolution of type II diabetes.


    Thus we get radically changing eating habits, reducing calorie intake and storing them in adipose tissue.


Obesity and overweight can be defined as abnormal or excessive accumulation of fatty tissue, which is harmful to health and, according to their degree, it reduces the quality of life and promotes premature death.

The body mass index (BMI) -the weight in kilograms divided by the square of height in meters (kg / m2) is a simple indication of the relationship between weight and height that is commonly used in clinical practice, to identify overweight and obesity in adults.

Therefore we consider obese patients with BMI of 30 kg / m2.

Obesity is a chronic disease recognized by WHO since 1997, multifactorial result of the interaction between genotype and environment. This disease affects a large percentage of the population in developed as ours, covering all ages, sexes and social conditions countries. The prevalence of obesity has increased and continues to increase at an alarming rate in our society, as well as countries with economies in transition, reaching epidemic proportions. For its metabolic implications, this disease substantially increases the likelihood of developing certain diseases, called co-morbidities (see table) that greatly increase cardiovascular risk, so, that have made obesity the second leading cause of premature death and avoidable , after smoking.

The risk of mortality increases by a person as you increase your BMI doubling from BMI 35 kg / m2. In short, obesity living conditions that are less and also worse.