Dr Christopher Pray tells CBS Pittsburgh that before declaring restless leg syndrome a stand-alone risk factor for heart disease, he wants more study and more consistent correlation.

Researchers at Penn State University have linked the condition to an increased risk of heart disease.

“Patients that did report symptoms of restless leg syndrome actually were found to have not only increased risk of cardiac disease, but from dying of cardiovascular disease,” says Dr. Christopher Pray, a cardiologist at St. Clair Hospital.