Here is another study which highlights a similar issue:
PTSD causes early death from heart disease
Vietnam veterans who experienced posttraumatic stress disorder (PTSD) were twice as likely to die from heart disease as veterans without PTSD, a new Geisinger study finds.
In a study published in the July issue of Psychosomatic Medicine, Geisinger Senior Investigator Joseph Boscarino, PhD, MPH examined the prevalence of heart disease, PTSD and other problems in more than 4,000 Vietnam veterans.
The more severe the PTSD diagnosis, the greater the likelihood of death from heart disease, the study showed.