It's a combination of those things. Certainly there's a genetic component. So maybe we'll zoom out to start with and just think about what is dementia?

But those first two, something like 70 to 90% of dementias, they are directly tied to a lifestyle in the environment. And right now, it's estimated that somewhere between 45 and maybe even 70 or more percent of dementias are preventable.

We know that the rates of dementia are going to double or triple in the next two or three decades.