A serious medical condition caused by a reduction in the supply of blood to the heart is called myocardial infarction or heart attack. The symptoms are:
- Weakness
- Anxiety
- Light-headedness
- Chest pain
- Shortness of breath
- Sometimes, chest pain confused with indigestion when it is not severe

The leading cause of heart attack is coronary heart disease, which is a condition characterised by a reduced supply of blood to the heart due to blood vessels clogged with cholesterol and plaques. A heart attack is majorly caused by a blood clot formed by the rupture of plaques.

Yes, a heart attack can be prevented by the following:
- Weight management
- Adequate physical activity
- Reduced alcohol consumption or no smoking
- Diet modification, promoting high-fibre and low-fat diet

Individuals with the following conditions are at a higher risk of developing a heart attack:
- Family history
- Obesity
- Inadequate physical activity
- High blood pressure or/and cholesterol
- Diabetes
- Smokers

A heart attack diagnosed through:
- An electrocardiogram (primary diagnostic test)
- Blood test
- Chest x-ray
- Echocardiogram
- Coronary angiography