If physical activity causes chest pressure, unusual breathlessness, dizziness, faintness, or pain spreading to the arm or jaw, stop and seek appropriate medical assessment. If symptoms are severe, persistent, or suggest a heart attack, call emergency services.
A Heart-Healthy Diet Is About Patterns, Not One Miracle Food
There is no single food that can prevent every heart attack.
Instead, long-term eating patterns have a much greater influence on cardiovascular health.
A heart-supportive diet generally emphasizes vegetables, fruits, whole grains, beans, nuts, seeds, and appropriate sources of protein.
Fish can be included regularly, while lean poultry, legumes, and other minimally processed protein sources can help create balanced meals.
It is also useful to pay attention to the types of fat consumed.
Replacing some sources of saturated fat with unsaturated fats may help improve cholesterol levels. Unsaturated fats are found in foods such as olive oil, nuts, seeds, and certain fish.
At the same time, limiting foods high in trans fats, excessive added sugar, and large amounts of sodium can support overall cardiovascular health.
Highly processed foods are not all identical, and eating one particular food does not determine someone's heart health. What matters is the overall pattern over time.
For example, regularly choosing fruit instead of sugary snacks, adding vegetables to meals, and replacing some processed meat with beans or fish can be practical steps.
People with specific medical conditions may need individualized dietary advice.
The goal is not to follow an extreme diet. It is to build eating habits that are balanced, realistic, and sustainable.
Why You Should Not Ignore Swelling in Your Legs or Feet
The earlier section mentioned swelling and changes in the feet. These symptoms deserve a more careful explanation.
Swelling in the feet and ankles can occur for many reasons, including prolonged standing, certain medications, venous circulation problems, kidney disease, liver disease, and heart failure.
Heart failure occurs when the heart cannot pump blood effectively enough to meet the body's needs.
When this happens, fluid may accumulate in different parts of the body. Some people develop swelling in both ankles or lower legs. Others may notice rapid weight gain caused by fluid retention, abdominal swelling, or breathlessness when lying flat.
However, swollen feet alone are not a dependable early warning sign of an impending heart attack.
A heart attack and heart failure are related but different conditions. A heart attack can damage the heart muscle and sometimes lead to heart failure, but swelling is not a reliable way to predict that a heart attack is about to occur.
Other changes, such as pale, cold, or bluish toes, may be associated with circulation problems, but they can also have causes unrelated to coronary artery disease.
Sudden swelling in one leg, particularly when accompanied by pain, redness, or warmth, requires prompt medical assessment because it may indicate a blood clot in a deep vein.
If swelling occurs with sudden breathlessness, chest pain, fainting, or coughing up blood, seek emergency medical attention.
The most important lesson is to consider the whole picture rather than interpreting one physical sign in isolation.
What Medical Tests Can Help Assess Your Heart Health?
If you are concerned about your cardiovascular health, a healthcare professional can recommend tests based on your symptoms and risk factors.
One commonly used test is an electrocardiogram, also known as an ECG or EKG.
An ECG records the electrical activity of the heart. It can help identify certain rhythm abnormalities and changes that may suggest reduced blood flow or a heart attack.
However, a normal ECG does not rule out every heart problem. Additional tests may be needed when symptoms or clinical findings remain concerning.
Blood tests can also play an important role.
During a suspected heart attack, doctors commonly measure cardiac troponin. Troponin is a protein released into the blood when heart muscle cells are injured.
The level may rise after a heart attack, although timing matters. A test performed very early may not show an elevation, so repeat testing is sometimes necessary.
Other tests may include:
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Echocardiography: Uses ultrasound to examine heart structure, pumping function, and valve movement.
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Stress testing: Evaluates how the heart responds to physical activity or medication that increases cardiac workload.
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Coronary CT angiography: Uses specialized imaging to assess the coronary arteries.
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Coronary angiography: Uses contrast dye and X-ray imaging to examine blood flow through the coronary arteries.
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Cholesterol testing: Helps assess levels of different blood fats associated with cardiovascular risk.
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Blood pressure measurement: Identifies elevated blood pressure that may increase long-term cardiovascular risk.
Not everyone needs every test.
A healthcare professional will consider symptoms, medical history, examination findings, and overall risk before deciding which investigations are appropriate.
If you are experiencing symptoms of a possible heart attack, do not delay emergency care to arrange a routine appointment or screening test.
What to Do If You Think Someone Is Having a Heart Attack
Knowing how to respond can save a life.
If someone develops symptoms that may indicate a heart attack, treat the situation as an emergency.
The first step is to call emergency medical services immediately.
In Vietnam, the emergency medical number is 115. In other countries, use the appropriate local emergency number.
Do not wait for the person to confirm that the discomfort is severe. Do not assume that the symptoms will disappear after a few minutes.
While waiting for help:
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Help the person stop physical activity and rest in a comfortable position.
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Keep them calm and avoid unnecessary movement.
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Loosen tight clothing if it makes breathing or comfort difficult.
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Follow the emergency dispatcher's instructions.
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Do not allow the person to drive themselves to the hospital.
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If they become unresponsive and are not breathing normally, begin CPR if you are able and follow the dispatcher's guidance.
If an automated external defibrillator, or AED, is available, ask someone to bring it. Follow the device's spoken instructions.
Aspirin may be recommended in some suspected heart attacks because it can help reduce blood clotting. However, it is not appropriate for everyone.
If the emergency dispatcher or a healthcare professional advises aspirin, follow their instructions. Do not give it to someone with a known serious aspirin allergy, active significant bleeding, or another contraindication. Never delay calling emergency services in order to find medication.
Also, do not give someone another person's prescription medication.
The most important action is obtaining emergency medical care as quickly as possible.