You probably don’t spend much time inspecting your earlobes. But a quick check in the mirror might reveal a subtle physical trait linked to cardiovascular health. A deep, diagonal line crossing the bottom of your earlobe could be more than just a normal sign of aging.
Medical professionals refer to this specific wrinkle as Frank’s sign. The name comes from Dr. Sanders T. Frank, a pulmonologist who first noted the connection in the early 1970s. He observed that many of his patients with confirmed coronary artery disease shared this distinct feature.
Since that initial observation, numerous studies have explored the link between this diagonal lower-earlobe crease and cardiovascular issues. According to recent reporting from NBC’s TODAY, having this crease does not guarantee you’ll develop heart problems, but research repeatedly documents it as a potential warning sign.
The crease typically extends from the tragus — the small bump of cartilage right next to your face — downwards at a 45-degree angle to the outer edge of the earlobe. Here are examples from a scientific journal.
It can appear on just one ear or both. When present on both sides, the correlation with cardiovascular risk is even stronger.
You might be wondering how a wrinkle on your ear connects to the arteries pumping blood to your heart. The exact biological mechanism remains debated among researchers.
However, scientists have proposed a few compelling theories. One leading concept focuses on the type of blood vessels supplying the earlobes and the heart muscle. They rely on end arteries, meaning they don’t have a backup blood supply. If circulation is compromised, the tissue in both areas stands to suffer damage.
Another theory points to the breakdown of elastic fibers. The process causing your earlobe to lose elasticity might also be happening inside your body. The loss of elastin can cause the blood vessels around your heart to stiffen and narrow.
Some skeptics argue the earlobe crease is simply a byproduct of getting older, as both heart disease and skin wrinkles increase with age. Yet, multiple studies show the crease remains an independent predictor of heart issues, even when accounting for age, smoking habits, and diabetes.
It is important to differentiate a true Frank’s sign from a temporary sleep crease. A mark from your pillow will fade shortly after you wake up. A true diagonal earlobe crease is permanent and remains visible regardless of your sleeping position or how you move your head.
If you notice this line on your ear, there’s no need to panic. It is merely one factor in your overall health profile. Many people with the crease have perfectly healthy hearts, while others who suffer heart attacks have smooth earlobes.
Instead of worrying, use the discovery to take proactive steps. Bring it up at your next routine medical appointment. Your doctor can evaluate your actual risk factors and recommend appropriate screenings to ensure proper heart function.