Vitamin D 'is mental health aid'

BBC reports:

Vitamin D, found in fish and produced by sun exposure, can help stave off the mental decline that can affect people in old age, a study has suggested.

UK and US researchers looked at 2,000 people aged 65 and over.

They found that compared to those with the highest vitamin D levels, those with the lowest were more than twice as likely to have impaired understanding.

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