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Senior cognition improved in 4 ways by Vitamin D (50,000 IU weekly for 8 weeks) – Sept 2023

The effect of vitamin D on neurocognitive functions in older vitamin D deficient adults: a pilot longitudinal interventional study

Psychogeriatrics. 2023 Sep;23(5):781-788. doi: 10.1111/psyg.12997
Banu Ozulu Turkmen 1, Busra Can 2, Seda Buker 3, Birsu Beser 3, Deniz Büyükgök 3, Bahar Dernek 4, Sevilay Bovatekin 1, Pınar Kucukdagli 1, Birkan Ilhan 1, Şükriye Akça Kalem 3, Nilgun Erten 1, Mehmet Akif Karan 1, Gulistan Bahat 1

Background: The relationship between vitamin D and cognitive status remains controversial. We aimed to evaluate the effect of vitamin D replacement on cognitive functions in healthy and cognitively intact vitamin D deficient older females.

Methods: This study was designed as a prospective interventional study. A total of 30 female adults aged ≥60 with a serum 25 (OH) vitamin D level of <10 ng/ml were included. Participants were administered 50 000 IU vitamin D3 weekly for 8 weeks followed by a maintenance therapy of 1000 U/day. Detailed neuropsychological assessment was performed prior to vitamin D replacement and repeated at 6 months by the same psychologist.

Results: Mean age was 63 ± 6.7 years and baseline vitamin D level was 7.8 ± 2.0 (range: 3.5-10.3) ng/ml. At 6 months, vitamin D level was 32.5 ± 3.4 (32.2-55) ng/ml.

  • The Judgement of Line Orientation Test (P = 0.04),
  • inaccurate word memorizing of the Verbal Memory Processes Test (P = 0.02),
  • perseveration scores of the Verbal Memory Processes Test (P = 0.005),
  • topographical accuracy of the Warrington Recognition Memory Test (P = 0.002), and the
  • spontaneous self-correction of an error in the Boston Naming Test (P = 0.003)

scores increased significantly, while the

  • delayed recall score in the Verbal Memory Processes Test (P = 0.03),
  • incorrect naming of words in the Boston Naming Test (P = 0.04),
  • interference time of the Stroop Test (P = 0.05), and
  • spontaneous corrections of the Stroop Test (P = 0.02)

scores decreased significantly from baseline.

Conclusion: Vitamin D replacement has a positive effect on cognitive domains related to visuospatial, executive, and memory processing functions.

Comment on inadequate follow-up dosing by VitaminDWiki:

Only 1,000 IU of vitamin D was given daily during the last 4 months
If they had instead used 50,000 IU every two weeks they would have had much better outcomes
And vitamin D levels of 40 ng instead of 30 ng

VitaminDWiki - 5 studies in both categories Intervention - non daily and Cognition

This list is automatically updated

VitaminDWiki – Cognitive category contains

Very brief summary of Cognitive decline
Treatment : Vitamin D intervention slows or stops progression
Prevention : Many observational studies - perhaps Vitamin D prevents
Omega-3 both prevents and treats cognition
Wonder the benefits if both Vitamin D AND Omega-3 were to be used
Dementia page - 50 items

370 items in Cognition category

see also Overview Alzheimer's-Cognition and Vitamin D
Overview Parkinson's and Vitamin D

Studies in both categories of Cognition and:
Cardiovascular (7 studies), Genetics (9 studies), Vitamin D Receptor (16 studies), Omega-3 (49 studies), Intervention (19 studies), Meta-analyses (22 studies), Depression (23 studies), Parkinson's (22 studies)
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Poor cognition 26 percent more likely if low Vitamin D (29 studies) – meta-analysis July 2017
Every schizophrenia measure was improved when vitamin D levels were normalized – June 2021
Cognitive Impairment and Dementia often associated with low Vitamin D – April 2020
IQ levels around the world are falling (perhaps lower Vitamin D, Iodine, or Omega-3)
Search VitaminDWiki for "WHITE MATTER" 325 items as of March 2023

Types of evidence that Vitamin D helps brain problems - 2014

VitaminDWiki – Overview Alzheimer's-Cognition and Vitamin D contains: