Dementia Why Women?

"Research shows that older women have a significantly higher risk for Dementia than do males of equal life styles.  Research also shows, in general, women live significantly longer than males, except where "symptoms" of Dementia seem apparent. This issue would seem reasonable, that more women die from a woman's disease, except for one observation, Dementia has no specific symptoms. The researchers apparently see Dementia as the Demise du Jour - whatever is at hand.
So, why are women affected more profoundly than men by a dis-ease of no specific symptoms?This book may have an answer."