Low vitamin D levels are associated with impaired cognition.
Vitamin D is important in the regulation of multiple brain processes, and studies have suggested a possible association between low concentrations of 25-hydroxyvitamin D [25(OH)D] and impaired cognition. Researchers in France examined data on 752 women (mean age, 80) participating in a larger, cross-sectional, population-based study of risk factors for hip fractures in women aged 75 or older.
The researchers measured serum 25(OH)D and parathyroid hormone (PTH) levels, assessed global cognitive function through a 10-item screening test, and controlled for many variables (e.g., age, education level, hypertension, depression). Of the sample, 17% had low 25(OH)D concentrations (<10 ng/mL). Compared with the normal-level (≥10 ng/mL) group, the lo…
Reviewing Author
DisclosuresRoyaltiesTextbook of Traumatic Brain Injury, 2nd and 3rd editions
Editorial BoardsUpToDate; Journal of Neuropsychiatry and Clinical Neuroscience
Leadership Positions in Professional SocietiesNorth American Brain Injury Association (Board Member); National Institute on Disability, Independent Living, and Rehabilitation Research (Chair of Data Monitoring Safety Board for study of donepezil on cognition after traumatic brain injury)
DisclosuresRoyaltiesTextbook of Traumatic Brain Injury, 2nd and 3rd editions
Editorial BoardsUpToDate; Journal of Neuropsychiatry and Clinical Neuroscience
Leadership Positions in Professional SocietiesNorth American Brain Injury Association (Board Member); National Institute on Disability, Independent Living, and Rehabilitation Research (Chair of Data Monitoring Safety Board for study of donepezil on cognition after traumatic brain injury)