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Vitamin D and Cognitive Function

Cognitive dysfunction can lead to confusion, memory problems, and difficulty concentrating. Interestingly, scientists found that vitamin D can function as a neurosteroid or “cognitive enhancer”, thus preventing age-related cognitive decline and improving overall mental health. A growing body of scientific evidence supports the brain-boosting properties of vitamin D:
1. Vitamin D deficiency is associated with worse cognitive performance and impairment. [399-412]
2. In older adults, 16 months of 800 IU/day vitamin D3 supplementation improves cognitive performance. [413]
3. Vitamin D supplementation decreases the risk of Alzheimer’s disease. [414]
4. In younger individuals, vitamin D supplementation improves executive functioning and mental health. [415]
5. In individuals with inadequate baseline vitamin D levels, higher doses of vitamin D supplementation improve nonverbal (visual) memory. [416]
6. In frail elder adults, vitamin D supplementation improves cognition. [417]
7. In Alzheimer’s patients over the age of 60 years, vitamin D supplementation decreases plaque build-up in the brain. [418]
8. In patients with severe vitamin D deficiency, vitamin D supplementation improves learning and memory. [419]
9. In older adults, vitamin D deficiency is associated with dementia and that vitamin D supplementation might have a protective effect. [420-423]

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