An important consideration in clinical nutrition management is food habits. The psychology of food habits is very interesting and can be useful for management of nutritional problems. Specific eating habits are accompanied by changes in patient’s own body perception, psychological well-being and interpersonal relationships. The dissatisfaction with one’s own appearance and the pursuit to reduce body mass start to be in the center of patient’s attention which may result in various psycho-pathological symptoms. This book focuses on the psychological wellbeing and attitude towards one’s own sexuality in female users of Polish websites on eating disorders; Sleep, television, texting and computer habits in schoolchildren and adolescents that are overweight; the psychology of food habits in an Indochina context; and the disordered eating habits among adolescents.