Five subtle and surprising signs your heart may be in serious danger

Your body often sends warning signals when something isn’t right — and heart disease is no exception. The challenge is that heart problems don’t always announce themselves with dramatic chest pain. Instead, the red flags can appear in unexpected ways, from jaw or tooth pain to nausea, breathlessness or even erectile dysfunction. These symptoms are frequently brushed off or misinterpreted, but recognising them early can be life-saving.

Cardiologist and heart-transplant specialist Dr Dmitry Yaranov recently highlighted five of the most unusual and easily overlooked signs that could point to serious heart trouble. In an Instagram post shared on December 23, he warned: “Your heart doesn’t always send obvious warnings. Many serious cardiac issues show up in ways people dismiss, mislabel, or completely ignore. If something feels off, trust it. Prevention and early action save lives.”

Here are the key symptoms he urges people not to ignore:

Jaw or tooth pain
Unexplained pain in the jaw or teeth can be an early sign of heart disease, particularly in women. Dr Yaranov describes this as “referred pain” from the heart, which is often mistaken for a dental problem but may indicate angina or even an impending heart attack.

Leg swelling
Swelling in the legs or ankles can signal heart failure. When the heart struggles to pump blood effectively, fluid can accumulate in the lower limbs, causing puffiness and discomfort that often worsens by evening or at night.

Shortness of breath while lying down
Difficulty breathing when lying flat — known as orthopnea — is a classic symptom of congestive heart failure. “If you need extra pillows to sleep, that’s a red flag,” Dr Yaranov says.

Nausea and cold sweats
Nausea accompanied by cold sweats can be a sign of a “silent” heart attack, especially in women. These symptoms may also come with fatigue, dizziness or anxiety. “If your gut says something is off, listen,” the cardiologist advises.

Erectile dysfunction
Erectile dysfunction can be an early warning sign of underlying vascular disease and may appear years before other heart symptoms. Dr Yaranov explains that the arteries supplying the penis are smaller than coronary arteries, so they are often affected earlier.

Awareness of these subtle signs, experts stress, is just as crucial as acting on them. Paying attention to your body and seeking timely medical advice could make all the difference in protecting your heart health.