Among the top 10 causes of death in the U.S. Alzheimer's disease is the only one with no method to prevent, cure or even slow its progression. New research has generated hope among scientists and caregivers that treatment for the disease could come sooner than many dared to think possible. But there's good reason to be cautious. The outcomes of studies on several promising drugs are due this year. Researchers fear pharmaceutical companies might halt the search for treatments if the results are disappointing. A major international conference on Alzheimer's is in session this week in Vancouver, Canada. We'll provide the latest news from the conference and efforts to find a cure.