Vitamin D improves brain function

In a mental health study, doctors measured blood levels of vitamin D and mental function in 752 similar, relatively healthy women, aged at least 75.

Researchers separated the women into two groups; those with low vitamin D—less than 10 nanograms of vitamin D per milliliter (ng per ml) of blood—and those with 10 or more ng per ml. The women in the higher vitamin D group were half as likely to have impaired mental function as were women with lower levels of vitamin D. 

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