Women, more than men, are charged with taking care of loved ones suffering from Alzheimer's -- and the burden is starting to take a toll, says the Shriver Report on Alzheimer's. Previous studies show more than 75% of caretakers are women, and the Shriver Report says nearly half of those women are stressed to the point where their physical health is affected. "It's a cruel disease," says Ana Marie Ortega, who is taking care of her mother. "It robs the person of their life and the people around them. This time it happens to be me because I chose to take care of mom."