Vitamin D and cognition in older adults: international consensus ă guidelines


  • Annweiler Cédric
  • Dursun Erdin
  • Feron François
  • Gezen-Ak Ă Duygu
  • Kalueff Allan V.
  • Littlejohns Thomas
  • Llewellyn David Ă
  • Millet Pascal
  • Scott Tammy
  • Tucker Katherine L.
  • Ă Yilmazer Selma
  • Beauchet Olivier


Background. Hypovitaminosis D, a common condition in older adults, is ă associated with brain changes and dementia. Given the fast growing ă contribution of literature in this research field, clear guidance is ă needed for clinicians and researchers. Methods. International experts ă met at the invitational summit on ``Vitamin D and cognition in older ă adults'' in Boston, MA, July 2013. Based upon literature and expert ă opinion, the task force focused on key questions on the role of vitamin ă D in Alzheimer disease and related disorders. Each question was ă discussed and voted using a Delphi-like approach. Results. Experts ă reached agreement that hypovitaminosis D increases the risk of cognitive ă decline and dementia in older adults, may alter the clinical ă presentation as a consequence of related comorbidities, but should not ă be used thus far as a diagnostic or prognostic biomarker of Alzheimer ă disease due to lack of specificity and insufficient evidence. ă Hypovitaminosis D should be screened in this population because of its ă high prevalence and supplemented, if necessary, but this advice was not ă specific to cognition. Conclusions. The task force agreed on 5 ă overarching principles related to vitamin D and cognition in older ă adults.

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