Lack of Vitamin ‘D’ Linked to Cognitive Decline

Researchers have for the first time identified a relationship between vitamin D deficiency and cognitive impairment in a large-scale study of older people.
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The study looked at almost 2,000 adults aged 65 and over. As levels of vitamin D went down, levels of cognitive impairment went up. Those with the lowest levels of vitamin D were more than twice as likely to be cognitively impaired.

One problem faced by older people is that the capacity of their skin to absorb vitamin D from sunlight decreases as they age.

Sources:

Eurekalert January 22, 2009

Journal of Geriatric Psychiatry and Neurology December 10, 2008

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