Do you have this line on your ear? Doctors warn: It's a hidden sign that can predict a heart attack

A subtle physical trait, a diagonal crease on the earlobe, is gaining recognition among medical professionals as a potential hidden sign of underlying cardiovascular problems. Known as Frank's sign, this earlobe fold is increasingly being linked to a higher risk of heart disease.

While common symptoms of heart issues like chest pain and shortness of breath are well-known, Frank's sign presents a less obvious warning. First observed by Dr. Sanders T. Frank in 1973, the sign involves a distinct crease that studies have shown correlates with coronary artery disease, peripheral vascular disease, and cerebrovascular diseases.

Research indicates that individuals with Frank's sign on one ear have a 33 percent increased risk of serious cardiac events. This risk escalates to 77 percent for those with the crease on both ears. Notably, this association holds true even when accounting for other known risk factors such as age, smoking, and diabetes.