India, Aug. 25 -- With more than 7 million Americans living with Alzheimer's dementia - a number projected to reach nearly 13 million by 2050 - new Emory University research suggests that higher vitamin D supplement intake may be associated with better cognitive function in adults with an elevated risk of dementia.

In a study of 54 adults with sleep disturbances and mild cognitive impairments (MCI), two hallmarks of early dementia, participants taking at least 5,000 IU of vitamin D daily showed better cognitive function compared to those who didn't.

The study, recently published in Sleep Medicine, found that participants who reported taking 5,000 IU or more of vitamin D daily scored more than 13% higher on the Montreal Cognitive Assessm...