Last week, I introduced you to patients around the country who symbolized hope in the fight against Alzheimer's disease.

They showed us a series of lifestyle changes that were able to slow and in some cases even reverse the course of their disease.

I mean, how many people five years into dementia get to go outside and go for a walk

by themselves every day? Not very many. I have to tell you that spending time with these patients

for my documentary really started to make me think about my own brain because I also have a family

history of Alzheimer's disease. So, admittedly, with a little bit of

trepidation, I decided to learn about my own risk. It was one of the most personal and revealing

experiences I've ever gone through. Listen to what I found in the last Alzheimer's patient,

part two.

One, two. Part 2. This is 71-year-old, Mike Carver.

Today, he's at his rock-steady boxing class in Berkeley, California.

While Mike has no known family history of Alzheimer's,

he was a carrier of both copies of the APOE4 gene.

That's the genotype that can increase a person's risk at least tenfold.

And in 2017, he was diagnosed with early onset Alzheimer's.

All right, time!

Mike, they tell you that this is the diagnosis, and then do they tell you at all what to do about it?

Not really. Just kind of go home and, you know, start putting things away.

Really? Yeah.

That must have been really hard.

If there's something you want to do, do it in the next couple of years

because we don't know how fast this will move.

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