The effect of weight-loss dieting on cognitive performance and psychological well-being in overweight women

This study investigated the effect of a weight reduction diet on cognitive performance and psychological well-being among overweight women. A total of 42 women undertook a 17-week weight reduction diet while 21 women maintain ed their usual diet and exercise habits for 12 weeks. All women completed n europsychological tests of speed of information processing, executive funct ion, working memory, immediate and delayed recall and recognition, and verb al ability. They also completed measures of weight locus of control, dietin g beliefs, self-esteem, mood and dysfunctional attitudes, before and after the 12-week; interval. Being on the diet had a minimal impact on cognitive performance and a positive effect on emotional eating, feelings of depressi on and dysfunctional attitudes. A sense of control over weight and eating b ehaviour increased among the dieters, but an internal locus of control was negatively related to self-esteem. (C) 2001 Academic Press.