One in 18 million people around the world are living with Alzheimer's

There has been some positive news coming out of the International Conference on Alzheimer's, held July 26-31 in Chicago, Illinois. Two preliminary studies show progress with use of an antihistamine and a nasal spray. But researchers say lifestyle factors and heredity also play a crucial role in determining whether you develop Alzheimer's. VOA's Melinda Smith has more.