Britain is a country where 'some' old men can stave off dementia by exercising body and brain, but 'many' cannot

There was an article in the Guardian newspaper today entitled :

Dr Luisa Dillner's guide to . . . signs of dementia
It concluded that, you are less likely to develop dementia if :

* you are mentally and physically active and get out of the house

* have friends you socialise with

* read

* play an instrument

* take courses

* play bridge

* play golf

*walk regularly

The problem is : where does this leave the thousands of old men who are possibly widowers and :

* have no friends

* don't read

* can't play a musical instrument

* don't want an adult education course

* can't play bridge

* can't play golf

* can't walk

The answer is :

Facing the prospect of dementia on their own.