A population based review of 1,658 adults in the U.S., with no dementia at the start of the study, found that those participants who had “severely deficient” levels of vitamin D in their blood were more than twice as likely to develop dementia or Alzheimer’s disease as those with “sufficient concentrations.”
The researchers, led by scientists at the University of Exeter in the U.K., used data from the Cardiovascular Health Study that included blood levels of serum 25-hydroxyvitamin D (25(OH)D). After an average of 5.6 years 171 participants had dementia, including 102 with Alzheimer’s.
The analysis found that those participants who were severely deficient in vitamin D were 225 percent more likely to develop dementia or Alzheimers’; and those who were deficient were 153 percent more likely compared to participants who vitamin D levels were sufficient.
“Our results confirm that vitamin D deficiency is associated with a substantially increased risk of all-cause dementia and Alzheimer disease,” the researchers concluded in the journal Neurology. “This adds to the ongoing debate about the role of vitamin D in non-skeletal conditions.”
It also adds more information to the debate over the questions “Are Vitamins and Supplements Beneficial?”
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