Consuming olive oil may help prevent strokes in older people. After considering diet, physical activity, body mass index and other risk factors for stroke, the study found those who regularly used olive oil for both cooking and as a salad dressing had a 41 percent lower risk of stroke. Olive oil has been associated with protective effects against many cardiovascular risk factors such as diabetes, high blood pressure, high cholesterol and obesity.
American Academy of Neurology, June 2011