New Study Suggests Possible Link Between Nightmares and Heart Disease

U.S. military veterans set up 1,892 American flags on the National Mall in Washington on March 27, 2014. Win McNamee/Getty Images

A recent study showed that frequent nightmares are possibly associated with heart disease in veterans, especially young military veterans, even after an individual gains control over Post-Traumatic Stress Disorder (PTSD), according to MedPage Today.

The study was led by principal researcher Christi Ulmer, a clinical research psychologist in health services research and development in primary care at the Durham Veteran Affairs Medical Center and an assistant professor of psychiatry and behavioral sciences at Duke University Medical Center.

“While some have suggested that the association between PTSD and cardiovascular disease is solely due to poor health behaviors among those with PTSD, our findings suggest an important role for sleep and that there may be an independent role for nightmares, in particular for conferring cardiovascular disease,” she said.

The study consisted of 3,468 U.S. military veterans (77.4 percent were male) averaging around 38 in age, and all of the individuals involved in the study have served since Sept. 11, 2001. Out of all of them, 73.5 percent of the individuals had done one or two tours of duty. In addition, 65 percent of the total individuals involved in the study had been involved in either moderate combat exposure or more.

Analysis of the veterans showed that 33 percent of them reported having nightmares in the past week, and among all of the veterans, 41 percent of them had poor sleep. Approximately 33 percent of the veterans reported having at least one heart condition.

According to Healthline, it appears that younger military veterans are far more likely to develop PTSD and mental health issues after returning from war.

A study in the Clinical Psychological Science published in 2013 studied the effects of the Vietnam war and found that individuals who joined the war at or under the age of 25 were seven times more likely to develop PTSD, as compared to those who were older.

Some people who experience traumatic events may have difficulty adjusting for a short period of time. Depending upon the severity of the traumatic event some people may experience long term difficulty coping with symptoms and may be experiencing PTSD. It is a mental health condition that can trigger flashbacks, severe anxiety, nightmares, a heightened sense of danger, or impending doom.

According to Medpage Today, Ulmer said that even after accounting for PTSD, depression, and smoking, “severely distressing dreams continued to be associated with heart problems, hypertension, and other heart trouble.”

She argued that if there is a relationship between nightmares and cardiovascular disease then treatment for nightmares may be a way to improve cardiovascular health.