Cardiovascular disease is the leading cause of death among people in all industrialized nations. The heart requires a constant supply of oxygenated blood in order to function properly and a Choose...stroke heart attack fibrillation hernia occurs when the blood supply is blocked. The cardiovascular system consists of the heart, arteries, and veins. If blood is blocked from reaching some part of the brain, a Choose...stroke heart attack fibrillation hernia occurs. The primary cause of diseased arteries is atherosclerosis in which Choose...varicose veins anginacholesterol plaque develop in arteries and impede the flow of blood. Angioplasty and Choose...angioradiographycoronary bypass surgery hysterectomy angina are used to open up blocked and damaged arteries. Strokes can result from several kinds of vascular injury including a weak spot in an artery called an Choose...angina infarct aneurismischemia. Risk factors for cardiovascular disease include high blood pressure and high cholesterol. In most cases of high blood pressure the cause is Choose...obesity cigarette smoking poor diet unknown. The Choose...heartliver lungspancreas plays a key role in determining the level of cholesterol in the body. Normal blood pressure is defined as a measurement below Choose...100/50 130/80 150/100 200/100 . Other factors that may increase the risk of heart disease are smoking , excess salt in the diet, and stress. Small amounts of Choose...fish oils alcohol aspirinall of the above may reduce the risk of a heart attack and some antioxidant vitamins may also lower the risk because they destroy harmful Choose...pressure cholesterol free radicals homocysteine in the blood.