High blood pressure, also known as hypertension, is a serious health problem that can lead to heart attacks, strokes and kidney failure. A blood pressure reading of 140/90 mm Hg or above is considered high. Hypertension usually is diagnosed when a person has a sustained high reading over a certain period of time Common causes or contributing factors of hypertension are obesity, genetic factors, excessive drinking, high salt intake, lack of aerobic exercise, stress, birth control pills, pain relievers, kidney disease, and adrenal disease. Medication is often prescribed for hypertension. You can also help control it with simple natural remedies. – Health Tube.