What is the death rate from bulimia nervosa?

Surprisingly High. According to the national association of anorexia nervosa and associated eating disorders, eating disorders have the highest mortality rates of any mental disorder. The mortality rates vary considerably between studies and groups. A study published in the "american journal of psychiatry" (2009) gives the mortality rates: 4% for anorexia, 3.9% for bulimia and 5.2% for other eating disorders.