Eating disorder portion of the vulnerability to develop eating disorders can be inherited, and there is evidence to show that there is a genetic locus that shows susceptibility for developing anorexia nervosa. About 60% of eating disorder cases are attributable to biological and genetic components. Other cases are due to external reasons or developmental problems. There are also other neurobiological factors at play tied to emotional reactivity and impulsivity that could lead to binging and purging behaviors. Epigenetics: Epigenetic mechanisms are means by which environmental effects alter gene expression via methods such as DNA methylation; these are independent of and do not
Disordered eating observed and visual scales were used to measure mood and dissatisfaction before and after viewing the images. The findings of this experiment determined that negative mood and body dissatisfaction rankings were greater after being exposed to the celebrity and peer images, with no difference between celebrity versus peer images. The media is especially dangerous for females at risk for developing body image issues, and disordered eating, because the sheer number of possible comparisons become larger. Disordered eating Disordered eating describes a variety of abnormal eating behaviors that, by themselves, do not warrant diagnosis of an eating disorder. Disordered eating includes