How can bulimia cause heart attacks?

Usually Electrolytes: The common cause of heart attacks and cardiac abnormalities found with bulimia is due to major changes in the body's electrolyte balance secondary to binging and purging (vomiting, laxatives, diet pills, etc). Such behaviors alter electrolytes like potassium, sodium and chloride which regulate the heart muscles to function. Also a dysregulation of the autonomic stress-response system takes place.