In part 2 of our week-long series on Alzheimer's, we explore the state of new research on the disease.
So far, no drugs have been approved that actually stem the progression of the disease. How much do scientists really understand about Alzheimer's and what approaches are they taking to develop new drugs? Here and Now's Rachel Gotbaum takes a closer look inside ongoing research and drug trials, and focuses on what new treatments may be in the pipeline.
This segment aired on December 27, 2011.