High Levels of Vitamin D Decrease Dementia

In addition to the ability of high levels of vitamin D to decrease most cancers along with decreasing mortality, a new study indicates that vitamin D deficiency is associated with a substantially increased risk of dementia and Alzheimer’s disease in older people. This study is the most rigorous of its kind ever conducted. As an explanation of how vitamin D may act to prevent dementia and Alzheimer’s disease, the researchers point out that vitamin D increases clearance of amyloid plaques by stimulating macrophages and reducing amyloid-induced cytotoxicity and cell death in primary cortical neurons.

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