Older people who have higher levels of neuroticism are more likely to have worse cognitive function than those with other personality traits. Researchers say personality traits may be related to how well people can maintain their cognitive function, despite developing neuropathology associated with aging and dementia.
People who actively communicate in two or more languages may have a lower risk of cognitive decline associated with aging.
Identical twins were more likely to have similar sun-seeking behaviors than non-identical twins, suggesting genetics play a key role in sun-seeking behaviors. Researchers identified five genes associated with sun-seeking behavior, some of which have previously been associated with behavioral traits linked to risk-taking and addiction.
Sibling study reveals moderate cannabis use during adolescence has adverse effects on cognitive function that cannot be explained by genetics or other environmental factors.
Following a Mediterranean diet with greater adherence was linked to the lowest risk of cognitive impairment. High fish and vegetable consumption appeared to have the greatest protective effect against cognitive decline.
Multiple sclerosis patients who received N-acetylcysteine treatments had improvements in metabolism in brain areas associated with cognition and attention.
Among older women, lower levels of hydration were associated with lower scores on tests designed to measure attention, working memory, and motor speed. Researchers also found over-hydration may have a detrimental effect on cognitive function.
Findings debunk the common theory that attention is the only cognitive function affected by sleep deprivation. Lack of sleep also hinders a person's ability to complete activities that require following multiple steps.
Gait disorders and slowed walking speeds may be useful indicators of future cognitive decline.