Associations of lower vitamin D concentrations with cognitive decline and long‐term risk of dementia and Alzheimer's disease in older adults

Introduction Hypovitaminosis D has been associated with several chronic conditions; yet, its association with cognitive decline and the risk of dementia and Alzheimer's disease (AD) has been inconsistent. Methods The study population consisted of 916 participants from the Three‐City Bordeaux cohort aged 65+, nondemented at baseline, with assessment of vitamin D status and who were followed for up to 12 years. Results In multivariate analysis,...