NBC - New research suggests PTSD alone does not increase the risk of heart disease in veterans.
Researchers studied health records from more than 4,000 veterans who had not previously been diagnosed with heart disease.
The veterans with PTSD were more likely to develop heart disease compared to those without it.
But those with the disorder were also more likely to smoke, have type 2 diabetes, depression, obesity, high cholesterol and high blood pressure.
Scientists were not able to find a single condition that explained the link between heart disease and PTSD.