Skip to main content
BrainCited

Vitamin B12 für Age-Related Cognitive Decline

B

Combined B12 and folate supplementation slowed brain atrophy rate in MCI patients compared to placebo. Homocysteine reduction appears to be the primary mechanism linking B12 status to cognitive preservation.

<\/script>\n
`; }, get iframeSnippet() { const domain = 'braincited.com'; const params = 'ingredient\u003Dvitamin\u002Db12\u0026condition\u003Dcognitive\u002Ddecline'; return ``; }, get activeSnippet() { return this.method === 'script' ? this.scriptSnippet : this.iframeSnippet; }, copySnippet() { navigator.clipboard.writeText(this.activeSnippet).then(() => { this.copied = true; setTimeout(() => { this.copied = false; }, 2000); }); } }" @keydown.escape.window="open = false" @click.outside="open = false">

Embed This Widget

Style



      
      
    

Widget powered by . Free, no account required.

B

Fazit

Combined B12 and folate supplementation slowed brain atrophy rate in MCI patients compared to placebo. Homocysteine reduction appears to be the primary mechanism linking B12 status to cognitive preservation.

Key Study Findings

Review
Vitamin B12 deficiency among older adults and its associations with geriatric syndromes.
Dose: None vs.: None Outcome: None Wirkung: None None

Population: older adults with vitamin B12 deficiency and geriatric syndromes

Meta-Analysis
Associations between Diet and Cognitive Function in Stroke Survivors: A Systematic Review and Meta-analysis.
Dose: None vs.: Standard care or placebo Outcome: Global cognition in stroke survivors Wirkung: SMD=0.62 (energy-protein); SMD=-0.40 (B-vitamins) 0.009 (protein); 0.02 (B-vit)

Population: Adult stroke survivors (20 trials + 14 observational)

Controlled Clinical Trial 32 weeks
Vitamin B12 supplementation attenuates endoplasmic reticulum stress and neuronal cell death in the cerebral cortex …
Dose: 50 ug/kg diet vs 25 ug/kg diet vs.: HFHS diet without extra B12 Outcome: ER stress and neuronal cell death in cerebral … Wirkung: None None

Population: Male C57BL/6J mice on high-fat high-sucrose diet

Other
Estimating effects of serum vitamin B12 levels on psychiatric disorders and cognitive impairment: a Mendelian …
Dose: None vs.: None Outcome: Effect of serum B12 on psychiatric disorders (MR) Wirkung: OR 1.02 [1.00-1.04] for depression per SD increase 0.11 (depression); 0.39 (educa

Population: General population (Mendelian randomization, large GWAS)

Systematic Review
Impact of Vegan and Vegetarian Diets on Neurological Health: A Critical Review.
Dose: None vs.: None Outcome: Neurological health outcomes Wirkung: None None

Population: None

Review
Unlocking the cellular mystery: how proton pump inhibitors may alter the dementia landscape.
Dose: None vs.: None Outcome: Dementia risk with PPI use Wirkung: None None

Population: PPI users and dementia risk (review)

Key Statistics

12

Studien

2800

Teilnehmer

Positive

B

Bewertung

Referenced Papers

Science translational medicine 2024 12 Zitierungen
Molecular and cellular … 2023 8 Zitierungen
Nutrients 2022 76 Zitierungen
Vitamins and hormones 2022 28 Zitierungen
Current nutrition reports 2022 25 Zitierungen
International journal of … 2022 23 Zitierungen
Journal of Alzheimer's … 2018 281 Zitierungen
American family physician 2017 282 Zitierungen
Annual review of … 2016 432 Zitierungen
Annals of Indian … 2015 1 Zitierungen
Nutrition reviews 2014 25 Zitierungen
Journal of clinical … 2012 54 Zitierungen
The Practitioner 2010
Epidemiology (Cambridge, Mass.) 2006 49 Zitierungen
Journal of Alzheimer's … 2006 37 Zitierungen
Neurology India 2004 71 Zitierungen
The Cochrane database … 2003 263 Zitierungen
Current opinion in … 1998 30 Zitierungen

Dosage & Usage

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

Übliche Dosierungen

general:
2.4 mcg/day (RDA)
deficiency:
1,000-2,000 mcg/day
cognitivesupport:
500-1,000 mcg/day

Obergrenze: No established UL (water-soluble, low toxicity)

In der Forschung untersuchte Dosierungen

Dosierung Dauer Wirkung N
None -- Positive --
None -- Mixed --
50 ug/kg diet vs 25 ug/kg diet 32 weeks Positive --
None -- Neutral --
None -- Mixed --
None -- Negative --
None -- Mixed --
None -- Positive --

Beste Einnahmezeit: Morning, on empty stomach for better absorption (sublingual)

Safety & Side Effects

Gemeldete Nebenwirkungen

  • Generally very well-tolerated
  • Rare: acne-like eruptions at high doses
  • Injection site reactions (injectable form)

Bekannte Wechselwirkungen

  • Metformin (reduces B12 absorption)
  • Proton pump inhibitors (reduce B12 absorption)
  • Colchicine (reduces B12 absorption)

Tolerierbare Höchstaufnahmemenge: No established UL (water-soluble, low toxicity)

Konsultieren Sie immer Ihren Arzt, bevor Sie ein Nahrungsergänzungsmittel einnehmen.Konsultieren Sie immer Ihren Arzt, bevor Sie ein Nahrungsergänzungsmittel einnehmen.

Frequently Asked Questions

Does Vitamin B12 help with Age-Related Cognitive Decline?
Based on 12 studies with 2,800 participants, there is moderate evidence from clinical studies that Vitamin B12 may support Age-Related Cognitive Decline management. Our evidence grade is B (Good Evidence).
How much Vitamin B12 should I take for Age-Related Cognitive Decline?
Studies have used various dosages. A commonly studied range is 2.4 mcg/day (RDA). Always consult your healthcare provider before starting any supplement regimen.
Are there side effects of Vitamin B12?
Reported side effects may include Generally very well-tolerated, Rare: acne-like eruptions at high doses, Injection site reactions (injectable form). Most side effects are mild and dose-dependent. Consult your doctor if you experience any adverse reactions.
How strong is the evidence for Vitamin B12 and Age-Related Cognitive Decline?
We rate the evidence as Grade B (Good Evidence). This rating is based on 12 peer-reviewed studies with 2,800 total participants. The overall direction of effect is positive.

Related Evidence

FDA-Haftungsausschluss: Diese Aussagen wurden nicht von der Food and Drug Administration bewertet. Die Produkte und Informationen auf dieser Website sind nicht dazu bestimmt, Krankheiten zu diagnostizieren, zu behandeln, zu heilen oder zu verhindern. Die dargestellten Evidenzbewertungen basieren auf unserer Analyse veröffentlichter begutachteter Forschung und stellen keine medizinische Beratung dar. Konsultieren Sie immer Ihren Arzt, bevor Sie mit der Einnahme von Nahrungsergänzungsmitteln beginnen.