The reasons for the obesity increasing in prevalence are decrease in physical activity due to the lifestyle getting easier through developing technology and change in nutritional habits in the Modern life. Fast-food and quick service unhealthy foods and carbohydrate and refined sugar rich, but vegetable fiber poor, extremely fat rich nutrition form are among the most important factors leading to obesity. Also, becoming advanced technological tools such as cell phones, computers and TV, which fill in our free times, prevalence has significantly contributed to increasing of obesity. 

Obesity has a great importance due to high levels of diabetes, atherosclerosis, hypertension, cardiovascular diseases and blood lipids and to increase in the risk of many diseases. As these diseases may be prevented, reduced or treated by weigh loss, it is a disease needing to be treated absolutely.