he is the founding president of the buck institute on aging in marin county, and he is the author ofook that is stirring up a lot of controversy. it's called "the end of alzheimer's: tto prevent and ree decline." now, you've said this is a terrible disease and alzheimer's >> that's right. so, alzheimer's is now actually the third leading cause of death in the united states. it had been underestimated previously and called the sixth leading cause, but it's actually the third. it is now -- dementia is now the number-one leading cause of death in the united kingdom, so this is a huge problem. but when you actually look at what is causing it, all the contributors to this illness, what you find is that many are preventable and correctable. so, in fact, this should be -- if we all do the right things, this should be a rare disease. >> all right, so, it is a terrible disease, because the impact it has on the individual themselves and the family and the healthcare system -- they're just horrible. >> that's right. this costs our healthcare system over $260 billion per year. and of course, tha