Health authorities emphasize regular blood pressure monitoring because nearly half of American adults have high blood pressure, often without knowing it, earning hypertension the nickname "silent killer." High blood pressure rarely causes symptoms until it has already damaged your heart, brain, kidneys, or blood vessels, making early detection through regular monitoring crucial for prevention.

Normal blood pressure readings should be below 120/80 mmHg, with readings consistently above 130/80 indicating hypertension that requires medical attention. Check your blood pressure monthly using a validated home monitor, maintain a log of readings to share with your healthcare provider, and seek immediate medical care if readings exceed 180/110 mmHg.