Vitamin D pour Nutritional Deficiency Cognitive Impairment

Q: Does Vitamin D help with Nutritional Deficiency Cognitive Impairment?

Based on 20 studies with 4,500 participants, there is moderate evidence from clinical studies that Vitamin D may support Nutritional Deficiency Cognitive Impairment management. Our evidence grade is B (Good Evidence).

Q: How much Vitamin D should I take for Nutritional Deficiency Cognitive Impairment?

Studies have used various dosages. A commonly studied range is 600-2,000 IU/day. Always consult your healthcare provider before starting any supplement regimen.

Q: Are there side effects of Vitamin D?

Reported side effects may include Hypercalcemia at very high doses, Nausea and vomiting, Kidney stones (rare, high doses), Weakness and fatigue. Most side effects are mild and dose-dependent. Consult your doctor if you experience any adverse reactions.

Q: How strong is the evidence for Vitamin D and Nutritional Deficiency Cognitive Impairment?

We rate the evidence as Grade B (Good Evidence). This rating is based on 20 peer-reviewed studies with 4,500 total participants. The overall direction of effect is positive.

Vitamin D deficiency is identified as a critical risk factor for cognitive decline. 40% of geriatric memory clinic patients are D-deficient. Co-supplementation with B12 and folate appears to provide synergistic cognitive support.

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En conclusion

Key Study Findings

Observational Study n=2582

Relationship Between Serum Vitamins and Cognitive Impairment in the Elderly: A Study Based on the …

Dose: None vs: None Outcome: Cognitive impairment risk Effet: OR=0.695 (Vit D); OR=0.777 (FA) p=0.003 (Vit D); p=0.034 (FA)

Population: Elderly participants aged 60+ from NHANES 2011-2014

Review

B-vitamins and one-carbon metabolism during pregnancy: health impacts and challenges.

Dose: None vs: None Outcome: Pregnancy outcomes and offspring neurodevelopment Effet: None None

Population: Pregnant women (review)

Meta-Analysis

Effects of vitamins and polyunsaturated fatty acids on cognitive function in older adults with mild …

Dose: None vs: Control Outcome: Cognitive function Effet: SMD = 0.58, 95% CI = [0.20, 0.96] P = 0.003

Population: Patients with mild cognitive impairment

Other

Dietary Clostridium butyricum and 25-Hydroxyvitamin D3 modulate bone metabolism of broilers through the gut-brain axis.

Dose: 75 mg vs: None Outcome: Body weight Effet: None P < 0.05

Population: Rat model

Controlled Clinical Trial

Targeting neuroendocrine abnormalities in Parkinson's disease with exercise.

Dose: None vs: None Outcome: neuroprotection Effet: None None

Population: None

RCT n=65 36 weeks Double-blind

Yeast Beta-Glucan Supplementation with Multivitamins Attenuates Cognitive Impairments in Individuals with Myalgic Encephalomyelitis/Chronic Fatigue Syndrome: …

Dose: 4 capsules daily, each containing: beta-glucan 250 mg + vitamin D3 3.75 µg + vitamin B6 1.05 mg + zi vs: Placebo Effet: significant improvement in cognitive fatigue (FIS-40); p = 0.0338 0.0338

Key Statistics

Études

4500

Participants

↑

Positive

Note

Referenced Papers

Relationship Between Serum Vitamins and Cognitive Impairment in the Elderly: A Study Based on the NHANES Database. Other

Brain and behavior 2026

B-vitamins and one-carbon metabolism during pregnancy: health impacts and challenges. Review

The Proceedings of … 2025 5 citations

Effects of vitamins and polyunsaturated fatty acids on cognitive function in older adults with mild cognitive impairment: a meta-analysis of … Meta-Analysis

European journal of … 2024 16 citations

Dietary Clostridium butyricum and 25-Hydroxyvitamin D3 modulate bone metabolism of broilers through the gut-brain axis. Other

Poultry science 2024 9 citations

Yeast Beta-Glucan Supplementation with Multivitamins Attenuates Cognitive Impairments in Individuals with Myalgic Encephalomyelitis/Chronic Fatigue Syndrome: A Randomized, Double-Blind, Placebo-Controlled Trial. RCT

Nutrients 2023 9 citations

Targeting neuroendocrine abnormalities in Parkinson's disease with exercise. Other

Frontiers in neuroscience 2023 5 citations

Serum brain-derived neurotrophic factor and vitamin D: Two concordant players controlling depression among alopecia areata and vitiligo patients: A case-control … Other

Journal of cosmetic … 2023 3 citations

The relationship between neuropsychological function and responsiveness to vitamin D supplementation using artificial neural networks. Other

Nutrition and health 2020 4 citations

Vitamin and mineral supplementation for maintaining cognitive function in cognitively healthy people in mid and late life. Meta-Analysis

The Cochrane database … 2018 123 citations

Are Dietary Supplements and Nutraceuticals Effective for Musculoskeletal Health and Cognitive Function? A Scoping Review. Review

The journal of … 2017 75 citations

Effect of Vitamin Intake on Cognitive Decline in Older Adults: Evaluation of the Evidence. Review

The journal of … 2015 25 citations

[Vitamins and nutritional supplements in older persons: How to diagnose and when to substitute?]. Review

Der Internist 2015 3 citations

Influence of mineral and vitamin supplements on pregnancy outcome. Review

European journal of … 2012 225 citations

Multivitamin/mineral supplements and prevention of chronic disease. Review

Evidence report/technology assessment 2006

Dosage & Usage

mg = milligrams · mcg = micrograms (1,000× smaller) · IU = International Units

Posologies couramment utilisées

general:: 600-2,000 IU/day
deficiencycorrection:: 4,000-5,000 IU/day

Limite supérieure : 4,000 IU/day (IOM); 10,000 IU/day (Endocrine Society upper safety)

Posologies étudiées dans la recherche

Posologie	Durée	Effet	N
None	--	Positive	2582
None	--	Positive	--
None	--	Positive	--
75 mg	--	Neutral	--
None	--	Positive	--
4 capsules daily, each containing: beta-glucan 250 mg + vitamin D3 3.75 µg + vitamin B6 1.05 mg + zi	36 weeks	Positive	65
None	--	Negative	90
50000 IU/week	9 weeks	Positive	619

Moment optimal de prise : With meals containing fat; morning preferred

Safety & Side Effects

Effets indésirables signalés

⚠ Hypercalcemia at very high doses
⚠ Nausea and vomiting
⚠ Kidney stones (rare, high doses)
⚠ Weakness and fatigue

Interactions connues

● Corticosteroids (reduce calcium absorption)
● Statins (both affect cholesterol pathways)
● Thiazide diuretics (additive calcium retention)
● Weight loss drugs (may reduce vitamin D absorption)

Apport maximal tolérable : 4,000 IU/day (IOM); 10,000 IU/day (Endocrine Society upper safety)

Consultez toujours votre professionnel de santé avant de commencer tout complément alimentaire.Consultez toujours votre professionnel de santé avant de commencer tout complément alimentaire.

Frequently Asked Questions

Does Vitamin D help with Nutritional Deficiency Cognitive Impairment?

Based on 20 studies with 4,500 participants, there is moderate evidence from clinical studies that Vitamin D may support Nutritional Deficiency Cognitive Impairment management. Our evidence grade is B (Good Evidence).

How much Vitamin D should I take for Nutritional Deficiency Cognitive Impairment?

Studies have used various dosages. A commonly studied range is 600-2,000 IU/day. Always consult your healthcare provider before starting any supplement regimen.

Are there side effects of Vitamin D?

Reported side effects may include Hypercalcemia at very high doses, Nausea and vomiting, Kidney stones (rare, high doses), Weakness and fatigue. Most side effects are mild and dose-dependent. Consult your doctor if you experience any adverse reactions.

How strong is the evidence for Vitamin D and Nutritional Deficiency Cognitive Impairment?

We rate the evidence as Grade B (Good Evidence). This rating is based on 20 peer-reviewed studies with 4,500 total participants. The overall direction of effect is positive.

Related Evidence

Autres ingrédients pour Nutritional Deficiency Cognitive Impairment

Vitamin B12 A Folate B

Vitamin D pour d'autres pathologies

Depression-Related Cognitive Dysfunction C

Verdict rapide

Evidence Strength72%

High confidence

Synthèse des études

RCT (1)Meta (2)Other (17)

Comparer les alternatives

Découvrez comment d'autres ingrédients se comparent pour cette condition.Découvrez comment d'autres ingrédients se comparent pour cette pathologie.

Voir tous les ingrédients pour Nutritional Deficiency Cognitive Impairment

En savoir plus

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