One model gaining attention, which takes a team approach to care management, is the Healthy Aging Brain program, developed at Indiana University Center for Aging Research, in conjunction with the nonprofit research organization Regenstrief Institute.

WSJ: New Push For Early Testing, Treatment For Dementia

Their article, published in the Journal of Health and Social Behavior, examined the marital history and health indicators for 8, 652 middle-aged people in research funded by the National Institute on Aging.

CNN: Divorce takes health toll that remarriage can't heal, study says