It is being said that women suffer from Alzheimer's disease more because of their longer life expectancy than men. With the new research, scientists have been revisiting this long-held belief. As per the research, around two-thirds of American patients with Alzheimer's disease are women.

Now, the researchers are planning to study more possible factors, like genetic makeup, biological differences and lifestyle factors. Maria Carrillo, an Alzheimer's Association (AA) chief science officer, said that there should be a study on other possible reasons.

There are many biological factors that should be studied. AA is planning to start funding these studies this summer. As per Carrillo, such studies are long overdue. As per a new AA report, a woman aged 65 year old has 1 in 6 chance of having an Alzheimer's diagnosis. In the case of men, the chance is one in 11.

In comparison to men, women on an average live four to five years more. There could be a possibility that women’s longer life could a reason as any aliment shows up later in the life in the form of mental decline.

Genetic factors could also be the factor. As per a Stanford University research, women having a variant of the gene ApoE-4 were having around 200% more chance to develop the dementia disease. In the case of men, risk was just bit higher. Carrillo stated that it is equally important to study the risk in men as well.