A recent study by researchers at Emory University has highlighted the potential benefits of vitamin D for cognitive function in older adults experiencing memory problems and sleep disturbances. The findings were published in the journal Sleep Medicine.
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The research focused on 54 adults diagnosed or suspected to have mild cognitive impairment (MCI), a condition characterized by noticeable changes in memory and cognitive abilities greater than what is typically expected with aging. Participants also reported issues with sleep.
To evaluate cognitive abilities, participants completed the Montreal Cognitive Assessment (MoCA) and reported their vitamin D supplement intake, including the type and daily dosage.
The results indicated that participants who took 5,000 IU or more of vitamin D daily had higher MoCA scores compared to those who did not supplement with vitamin D. This association was consistent even after accounting for variables such as age, sex, body mass index, vitamin D type, and education level.
Furthermore, the study found no significant differences in MoCA scores between individuals taking vitamin D2 and those taking vitamin D3. Conversely, lower doses of vitamin D did not show a notable connection to cognitive performance.
The authors of the study posited that higher daily vitamin D intake might be linked to better cognitive outcomes for those grappling with sleep disturbances and mild cognitive impairment. They emphasized that this demographic represents a critical area for further research into modifiable factors that could impact cognitive changes as they progress. Additionally, the researchers pointed out the importance of addressing sleep issues, as a significant proportion of individuals with MCI experience sleep disturbances, which may be related to cognitive decline.