Eating disorders are complex conditions that arise from long-standing behavioral, emotional, psychological, interpersonal, and social factors. People with eating disorders often use food and control of food to cope with overwhelming feelings and emotions. While dieting, bingeing, and purging may begin as a way to cope, these behaviors ultimately damage physical, emotional, and mental health. Common eating disorders include anorexia nervosa, bulimia, and binge eating disorder. Friends and family should express concerns for a loved one's eating behaviors in a caring, supportive way and encourage seeking help from medical professionals.