Some scientists from the National Institutes of Health and Medical Research in Bordeaux, France, monitor the development of 7625 French people aged 65 years in three major cities, ie Bordeaux, Dijon, and Montpellier, for five years.
"Our research shows the need for a new set of dietary recommendations for preventing stroke for those aged 65 years and over,"said study author, Cecilia Samieri, as quoted by AFP.
Meanwhile, a neurologist at Columbia University Medical Center in New York, Dr. Nikolaos Scarmeas, who wrote an editorial published with the study, emphasized that the study was "observational".
The studies found the relation between olive oil user by people and the stroke risk that they get it, said scarmeas. But, this factor not need to translate to causality.
"People who eat olive oil may be very different from people who do not use it,"said Scarmeas.
Users olive oil, for example, may have a higher income, better overall eating or exercising more frequently than those who never consume olive oil.