IE 11 is not supported. For an optimal experience visit our site on another browser.
We apologize, this video has expired.

Why do women get Alzheimer’s disease twice as often as men?


Women are twice as likely as men to get Alzheimer’s disease, and no one knows why. As our Brain Power TODAY series continues, NBC special anchor Maria Shriver reports on an innovative new study that hopes to help develop effective treatments against Alzheimer’s.