dr. david samadi is here, too. chief of robotic surb iic surge. doctors, great to have you here. thank you so much. >> thank you. >> first, you begin with some of the biggest medical stories of the year. the first one is really a shocking study this year, predicting the number of people living with alzheimer's disease is expected to triple. triple, by 2015. dr. siegel, why so many more? and what can we all do about it? >> a lot of reasons and this is a well-known survey. they looked add 10,000 patients at rush institute and followed them for a decade. the reason for that, number one on the list is we're getting older. many more baby boomers like you and me, eric, and we're getting older. >> generation x. >> yeah, okay. sure, sure, eric, but the main thing is that, you know, most of these alzheimer's patients are going to beover the age of 85. that's why the baby boomers are going to fill this void. then the issue of obesity, people not exercising enough, not eating right, being on a lot of medications. all of those can increase your risk of alzheimer's. associated with this, we'r