Overweight and obesity are global and increasing health problems which contribute to the development of number of serious diseases. Although knowledge of the biological aspects of overweight and obesity is increasing very rapidly, psychological factors associated with this problem have not been enough considered. It seems very important to work out psychological theory and research concerning emotional and cognitive aspects of being obese, to search for psychological causes of obesity and to implement psychological interventions which improve motivation for management and effectiveness of treatment of people with overweight and obesity. The aim of this article is to review current knowledge concerning psychological aspects of overweight and obesity.