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Vitamin D3 as a potentially modifiable factor in mild cognitive impairment
  1. Hiroshige Fujishiro
  1. Department of Psychiatry, Kawasaki Memorial Hospital, Kawasaki, Japan
  1. Correspondence to Dr Hiroshige Fujishiro, Department of Psychiatry, Kawasaki Memorial Hospital, Kawasaki, Japan; fujishiro17{at}

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More biomarker-based research is required to determine the effectiveness of interventions in subjects with mild cognitive impairment (MCI)

MCI is a clinical diagnostic term for elderly subjects with impaired cognitive performance that does not significantly interfere with independent living. MCI, an intermediate condition between normal cognition and dementia, is typically divided into amnestic or non-amnestic subtypes, with single-domain or multidomain distinctions. After the diagnosis, some subjects with MCI develop Alzheimer’s disease (AD) dementia or other dementias resulting from non-AD brain diseases, whereas a substantial proportion of subjects may later be diagnosed as cognitively normal or remain diagnosed with MCI even after a prolonged period. Although the reason for the various clinical courses in subjects with MCI remains unclear, a recent large clinicopathological longitudinal study revealed disease …

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  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Competing interests None declared.

  • Patient consent Not required.

  • Provenance and peer review Commissioned; internally peer reviewed.

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