Whether hearing loss is truly a cause of cognitive decline or merely a risk factor associated with the ageing brain, the decline of cognitive abilities into dementia is set to explode financial models of health and social care in Western societies and requires urgent attention.

BBC: Viewpoint: Does deafness contribute to dementia?

New research suggests that people exposed to the herpes simplex type 1 virus, the virus that causes cold sores, may be at greater risk for developing cognitive problems, particularly memory problems.

FORBES: For Many, Herpes May Cause Memory Loss Along with Cold Sores

According to the guidelines, not participating in contact sports (to avoid concussions) is the only modifiable way to reduce risk for future cognitive decline or potentially CTE in older athletes with multiple prior concussions.

FORBES: Safety Prevails -- In Updated Guidelines To Manage Concussions

In fact, Age UK goes as far as arguing it is just as important as the physical activity bit as loneliness is a risk factor for both cognitive and physical decline.

BBC: Why old age need not be a burden

But the report found that while aspirin may slow changes in cognitive ability in women at high risk of a heart attack or stroke, it made no difference to the rate at which the women developed dementia - which was also examined for by a neuropsychiatrist.

BBC: Aspirin may 'slow elderly brain decline', study finds

The Wason test suggests that analysing social contracts and analysing risk are what evolutionary psychologists call cognitive modules bundles of mental adaptations that act like bodily organs in that they are specialised to a particular job.

ECONOMIST: Psychopathy