Vitamin E is a fat-soluble vitamin and an antioxidant that protects cells from pollution, toxins, and free radical damage. Vitamin E supports cardiovascular health by blocking the formation of compounds that are associated with free-radical damage. In one large epidemiological study a low level of vitamin E was found to be a greater risk for heart attack and stroke than cholesterol. Low vitamin E levels were predictive in 70% of cases for heart attack whereas high cholesterol and high blood pressure accounted for 29% and 25% of the study cases, respectively.