D Deficiency and Alzheimer’s Disease

Older adults who are severely deficient in vitamin D may be more than twice as likely to develop dementia or Alzheimer’s disease than those who don’t have a deficiency, according to the largest study of its kind, published Wednesday in the journal Neurology.

“We expected to find an association between low Vitamin D levels and the risk of dementia and Alzheimer’s disease, but the results were surprising — we actually found that the association was twice as strong as we anticipated,” noted lead researcher David Llewellyn of the University of Exeter Medical School in a media release.