This is a very nice question, we will talk about it.

How to prevent Dementia ? how to take care that we don't get dementia ?

There's a very simple science behind this,

Bhishma's 175-year-old wounded body lies on the battlefield of Mahabharat from around 21, 22 December to 14 January

Now think, he might be bleeding a bit? his sodium, potassium & haemoglobin levels might be falling with time.

But at the end he was able to tell the story of his life, his nine mistakes

How did he develop that kind of memory ? he wrote that

..Sanskrit phrase.. I didn't use my mind for myself

There is a theory, When you just think for yourself you store a lot of proteins in your body.

When a person becomes a caregiver for a Dementia patient, which is called thankless caregiving.

You do everything for them, they will abuse you. You take care of them they will ignore it.

They won't even recognise you. So when you involve yourself in such thankless service, Your brain gets sharp.

The preventive program for Dementia begins here.

Fortunately, I read Erikson's & Maslow's theory 40 years back

Because of that sensation, I was of immense to my father.

I have seen you sir you have served your father so well.

No, that is because I knew this from my early life

I agree. Sometimes it's difficult for others to understand.