In older persons, having a keen sense of smell is linked to a slower rate of brain volume loss and cognitive decline. This relationship between scent and brain and cognitive alterations may be particularly strong in those who have dementia or cognitive impairment.

Is sense of smell linked to cognitive health?

According to a study by a think group funded by the Pentagon, dementia affecting American officials poses a threat to national security as the national security staff ages. The study was published last spring at a time when numerous top American officials who were entrusted with some of the most highly sensitive intelligence in the country made mistakes in public, igniting calls for resignation and discussion about Washington's senile leadership.

Dementia among US officials poses national security threat: Study

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Is sense of smell linked to cognitive health?

Dementia among US officials poses national security threat: Study