Obesity is an important global public health problem and it is reported that the prevalence increased by 10-30% in the last decade. In our country, prevalence of obesity is 20.5% for men, 41.0% for women and 30.3% for general population. Most important causes of obesity are over- and mis-nutrition and insufficient physical activity, while genetic, environmental, sociocultural and psychological factors interact to cause obesity.
Morbid obesity leads to many health problems due to its negative effects on endocrine system, cardiovascular system, respiratory system, gastrointestinal system, skin, genitourinary system, musculoskeletal system and psychosocial condition. The reported rate of obesity-related death is 5% to 13 percent.