Eating disorder induce vomiting, such as those with anorexia nervosa, binge eating-purging type or those with purging-type bulimia nervosa are at risk for acid reflux. Polycystic ovary syndrome (PCOS) is the most common endocrine disorder to affect women. Though often associated with obesity it can occur in normal weight individuals. PCOS has been associated with binge eating and bulimic behavior. Other possible manifestations are dry lips, burning tongue, parotid gland swelling, and temporomandibular disorders. Pro-ana refers to the promotion of behaviors related to the eating disorder anorexia nervosa. Several websites promote eating disorders, and can provide a means for individuals to communicate
Binge eating disorder also be caused by environmental factors and the impact of traumatic events. One study showed that women with binge eating disorder experienced more adverse life events in the year prior to the onset of the development of the disorder, and that binge eating disorder was positively associated with how frequently negative events occur. Additionally, the research found that individuals who had binge eating disorder were more likely to have experienced physical abuse, perceived risk of physical abuse, stress, and body criticism. Other risk factors may include childhood obesity, critical comments about weight, low self-esteem, depression, and physical or sexual abuse