he's taken us to icaria, costa reek to and the other blue zones.> moving here, they took 20 years off my life. >> reporter: jim's mother is the first person in their family to be diagnosed with alzheimer's. >> it's terrifying. my mom was as sharp as a tack. >> reporter: jim is worried he'll be next. >> all the things that would come naturally in icaria, he doesn't have any of them. >> reporter: he's stressed out. he's beating a bad diet. >> he's not socially connected. he has all of the risk factors that has him like a locomotive toward alzheimer's. >> you had less on the island. that's why it made them as healthy as they were. >> reporter: for jim's sister, tina, the diagnosis is a wake-up call. >> and i know that, you know, if you have a mother that has alzheimer's, your chances is greater of having alzheimer's. >> 90% of alzheimer's is preventable. most of your mental health is up to you and the environment you create for yourself. >> reporter: so, dan shows the family some of the little ways they can bring the icarian live style to cleveland. f