The causes of binge eating disorder can be unique to the individual. Several factors may be involved, including the individuals’ genetic make-up, their body image, social experiences, and family health history. There is often a cross diagnosis with other mental health issues, such as PTSD, anxiety, or impulsive behaviour; for example, compulsive shopping. In addition, binge eaters suffer from high rates of depression. It is not yet known whether binge eating causes depression, or whether depression causes binge eating.