Final answer:
Hypertension is known as the 'silent killer' because it often has no symptoms before leading to severe health events like stroke or heart attack. It is a condition with persistently high arterial blood pressure and can be managed with diet, exercise, and medication.
Step-by-step explanation:
Hypertension, commonly referred to as high blood pressure, is a condition where the blood pressure in the arteries is continually elevated. It is true that hypertension is sometimes called the silent killer because it can progress without any symptoms until a serious event such as a stroke or heart attack occurs.
To manage hypertension and reduce the risk of cardiovascular diseases, lifestyle changes such as a healthy diet, regular exercise, and medication can be employed. Foods like skim milk, spinach, beans, bananas, and dark chocolate are thought to help lower blood pressure.