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Serum 25-hydroxyvitamin D predicts cognitive performance in adults
Hala Darwish1, Pia Zeinoun2, Husam Ghusn3
1Hariri School of Nursing, Faculty of Medicine, American University of Beirut, Beirut, Lebanon.
Neuropsychiatric Disease and Treatment
|September 9, 2015
Summary
Low vitamin D levels are linked to a higher risk of cognitive impairment in both older and younger adults. Addressing vitamin D deficiency may help prevent cognitive decline.
Area of Science:
- Neuroscience
- Endocrinology
- Public Health
Background:
- Vitamin D is crucial for calcium regulation and cognitive function.
- Vitamin D deficiency is prevalent in Lebanon and linked to cognitive impairment in older adults.
- This study investigates the association between vitamin D levels and cognitive performance in adults.
Purpose of the Study:
- To explore the relationship between serum 25-hydroxyvitamin D (25(OH)D) levels and cognitive performance.
- To assess cognitive function in both older (>60 years) and younger (30-60 years) adults.
- To identify potential links between vitamin D status and cognitive impairment.
Main Methods:
- Cross-sectional study of 254 adults (older and younger age groups).
- Measured serum 25(OH)D levels using electrochemoluminescent immunoassay.
- Assessed cognitive domains including visuospatial memory and processing speed, screened for depression.
Main Results:
- A significant association was found between low vitamin D levels and increased risk of cognitive impairment.
- This association was observed in both older and younger adult populations.
- Pearson's correlation and regression analyses confirmed the link between vitamin D and cognitive function.
Conclusions:
- Low vitamin D levels are associated with a greater risk of cognitive impairment.
- Correcting vitamin D deficiency should be explored as a potential intervention strategy.
- Further longitudinal studies are required to confirm the impact of vitamin D interventions on cognitive health.
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