When we think about heart problems, symptoms such as chest pain, breathlessness and excessive sweating often come to mind. But heart disease doesn't always announce itself so clearly. In some people, reduced blood flow to the heart can occur without noticeable chest pain or obvious symptoms. This is commonly referred to as silent ischemia.

Because there may be little or no warning, the condition can sometimes be discovered only during a routine medical examination or heart-related test.

How can artery blockage happen without symptoms?

Coronary artery disease develops when cholesterol and other substances build up inside the arteries supplying blood to the heart. Over time, this can narrow the arteries and reduce blood flow.

According to cardiologist Dr. Vivek Kumar, some people may experience very little or no pain even when the heart isn't receiving enough oxygen. The absence of pain doesn't necessarily mean that the heart is unaffected. Prolonged inadequate blood flow can damage heart muscle and increase the risk of serious complications.

Who is more likely to experience silent heart problems?

Certain health conditions and lifestyle factors can increase the risk of coronary artery disease and silent ischemia. These include:

• Diabetes

• High blood pressure

• High cholesterol

• Obesity

• Smoking

• Physical inactivity

• Excessive stress

• A family history of heart disease at a young age

• Increasing age

People with diabetes may sometimes have altered nerve function, which can affect how pain is perceived. Risk also tends to increase in men with age and in women after menopause.

Don't ignore these less obvious symptoms

Silent heart problems don't always cause classic chest pain. Some people may instead notice symptoms such as:

• Unusual or unexplained fatigue

• Breathlessness during activities such as climbing stairs

• Dizziness

• Unexplained sweating

• Indigestion-like discomfort

• Mild discomfort in the jaw, back or shoulders

Because these symptoms can have many causes, they are sometimes dismissed as gas, tiredness or normal effects of aging. Persistent or unusual symptoms should be discussed with a healthcare professional.

Which tests can detect heart problems?

The appropriate tests depend on an individual's symptoms, age and cardiovascular risk factors. A doctor may consider tests such as blood pressure measurement, cholesterol testing, an ECG, exercise stress testing or an echocardiogram.

In selected cases, further imaging such as CT coronary angiography may be recommended. However, there is no single heart test that everyone needs routinely. A healthcare professional should determine which investigation is appropriate.

How can you reduce your heart risk?

A heart-healthy lifestyle can help reduce cardiovascular risk. This includes regular physical activity, a balanced diet, maintaining a healthy weight, avoiding tobacco, managing stress and keeping conditions such as diabetes, high blood pressure and high cholesterol under control.

Regular health checkups become particularly important as cardiovascular risk increases with age or when there are multiple risk factors.

Don't wait for severe symptoms

The absence of chest pain doesn't guarantee that the heart is completely healthy. Seek urgent medical attention if you experience symptoms such as persistent chest pressure, sudden severe breathlessness, fainting, cold sweats or pain spreading to the arm, jaw, back or shoulder.

Early evaluation can be important because heart disease can sometimes progress before obvious symptoms appear.