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Published on: January 24, 2020
25-Hydroxyvitamin D levels and cognitive performance and decline in elderly men.
Y Slinin1, M L Paudel, B C Taylor
1One Veterans Dr. (111J), Minneapolis, MN 55417, USA. slini001@umn.edu
Neurology
|November 27, 2009
Summary
This study found limited evidence that low vitamin D levels are linked to cognitive impairment or decline in older men. Further research is needed to explore potential associations between vitamin D and brain health.
Area of Science:
- Gerontology
- Nutritional Neuroscience
- Epidemiology
Background:
- Vitamin D deficiency is common in older adults.
- Emerging research suggests a potential role for vitamin D in cognitive function.
Purpose of the Study:
- To investigate the association between 25-hydroxyvitamin D [25(OH)D] levels and cognitive impairment.
- To examine the relationship between 25(OH)D levels and the risk of cognitive decline over time.
Main Methods:
- A cohort of 1,604 men from the Osteoporotic Fractures in Men Study were assessed.
- 25(OH)D levels were measured, and cognitive function was evaluated using the Modified Mini-Mental State Examination (3MS) and Trail Making Test Part B (Trails B).
- Participants were followed for an average of 4.6 years to track cognitive changes.
Main Results:
- After adjusting for covariates, lower 25(OH)D levels did not show a statistically significant association with baseline cognitive impairment.
- A trend suggested a possible link between lower 25(OH)D and cognitive decline by 3MS, but it did not reach statistical significance.
- No significant association was found between 25(OH)D levels and cognitive decline as measured by Trails B.
Conclusions:
- The study found minimal evidence supporting an independent association between lower 25-hydroxyvitamin D levels and cognitive function or decline in older men.
- These findings suggest that vitamin D status may not be a primary driver of cognitive impairment or decline in this population.
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