High blood pressure, or hypertension, is a condition where the force of blood against artery walls is consistently elevated. It often has no symptoms but can lead to serious health problems such as heart disease, stroke, and kidney damage over time. Causes include genetic factors, unhealthy diet, lack of physical activity, stress, and aging. Diagnosis is through regular blood pressure measurements. Management involves lifestyle changes such as a balanced diet low in sodium, regular exercise, weight management, reduced alcohol intake, and stress reduction techniques. Medication may be prescribed to lower blood pressure and reduce the risk of complications.