NOVA 49x10 - Determined: Fighting Alzheimer's

Three women at risk of developing Alzheimer's join agroundbreaking study to prevent the disease while sharing theirups and downs, anxiously watching for symptoms, and hopingthey can make a difference. Barb, Sigrid, and Karen all hadmothers with Alzheimer's and witnessed firsthand thedevastation wrought by the disease, not only on the mind andbody but on patients' families. Now, they are allparticipating in a major study that tracks the health andmemory of thousands of people over many years, as researchershunt for lifestyle changes and medicines that could improve allour chances and ultimately protect the brain and body from oneof the world's deadliest diseases.