According to the statistics, the popularity of bariatric surgery as treatment of obesity is growing fast. The biggest increase in the number of obesity surgeries performed has been observed in Sweden and rose by 160% during the last three years. Moreover, the number of obesity surgeries has increased more than 120% in France and Germany. However, the figures become different when it turns to Spain. The rate of obesity surgeries performed in this country decreased by 33% from the year 2008 to the year 2011. This decline may be the result of difficult economic conditions observed in Spain during the analyzed period.