High blood pressure, or hypertension, is a common condition that raises blood vessel pressure, increasing the risk of heart attacks, strokes, and kidney disease. Symptoms may include headaches and dizziness, but it often has no noticeable signs. Managing blood pressure involves regular exercise, a low-sodium diet, and sometimes medication. Untreated hypertension can severely damage the heart and kidneys, so early detection and management are vital for maintaining health and preventing complications.