Dementia is one of the most important chronic and most common neurological disorders among the elderly people. It is known that the changes in the level of the brain begin to take shape several years before the symptoms appear. This enhances the possibility of preventing this morbidity or delaying it. It is possible to make a difference in the lives of people by identifying and modifying the risk factors, as the extensive modification of risk factors, especially in the middle of age (45-65 years), would reduce the risk of developing Dementia by a large percentage.