The study was led by Eva Penas Lledo, Ph.D., an associate professor in psychological medicine at the University of Extremadura
Medical School in Spain, and colleagues. Their cohort included 203 women who had been diagnosed with an DSM-IV eating disorder. As a part of taking the Diagnostic Interview Schedule, subjects were asked whether they had ever attempted
suicide. Thirty-eight said they had made such an attempt. All of the women had also been genotyped for the CYP2D6 gene. Seventeen
possessed more than the normal two copies of it and thus were extremely fast CYP2D6 metabolizers.