Vitamin deficiency raises dementia risk in elderly

A recent study found that healthy levels of vitamin D in middle age are associated with a reduced accumulation of the toxic tau protein in the brain, a marker linked to Alzheimer's disease. There is no relationship between vitamin D and beta-amyloid deposits. The study followed 793 individuals aged 39 for 16 years and discovered that those with higher vitamin D levels from the start were less likely to develop tau protein deposits in their brains later on. The results suggest that boosting vitamin D levels in middle age could be a preventative measure to lower the risk of developing Alzheimer's in the future, but further studies and clinical trials are still needed to confirm the effectiveness of vitamin D supplements in preventing dementia.

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