Dr. Majid Fotuhi

For example, your ability to walk...

is fine as you get older, but you just walk a little slower.

However, some people may have a muscle disease and they really can't walk.

The percentage of people who have a muscle disease is very small.

And the same way, the percentage of people who have a pure disease process that affects their brain is very small.

Now, let me clarify something.

There's an early onset Alzheimer's disease

and there's late onset Alzheimer's disease.

Early onset Alzheimer's disease is a disease, is a pure disease.

It's like 90% of it has to do with the genetics and you could slow it, you could make it a little less severe, you could postpone it a little bit, but it's a disease.

What happens to grandparents is about 5% disease and 90% lifestyle factors, medical conditions, childhood environment and so forth.

And that's the whole point.

Now,

The paper was published in a prestigious journal, Lancet, by a group of international researchers, about 40 of them.

And they looked at what factors increase the likelihood of dementia.

And they concluded that 45% of dementia cases in the world

can be prevented by addressing 14 factors.

And those 14 factors include things like diabetes, obesity, sedentary lifestyle, air pollution, hearing loss, vision loss, feeling isolated, and poor childhood education.

Now, that doesn't mean that only 45% can be prevented.

Based on the data they had, they came to that conclusion.