B-group vitamin deficiencies increase neuronal excitability and interfere with sleep
The review states that B-group vitamins (B6, B12, folate) are cofactors in serotonin and GABA synthesis, and their deficiency increases neuronal excitability and disrupts sleep. No specific effect sizes or quantitative data are provided.
This article is automatically generated from the structured evidence profile behind the claim above. Scores reflect the quality and quantity of available research, not clinical advice.
B-group vitamin deficiencies increase neuronal excitability and interfere with sleep The current body of evidence comprises 1 study. EvidenceHub rates the overall confidence at 32/100 (low).
The Claim
B-group vitamin deficiencies increase neuronal excitability and interfere with sleep
This conclusion is most relevant to: General population (from narrative review).
What the Research Shows
The conclusion draws on 1 linked study. Highlights from the cited literature:
- ▸Nutritional modulators of sleep: A narrative review of vitamins, minerals, amino acids, and their neurobiological and chronoepigenetic mechanisms. (Chronobiology international, 2026) —
How It Works
The proposed biological pathway:
- ▸B-group vitamins act as cofactors in serotonin and GABA synthesis
- ▸Deficiency reduces serotonin and GABA production
- ▸Reduced inhibitory neurotransmission increases neuronal excitability
- ▸Result: sleep disruption
Who Might Benefit
Evidence fit by population:
- ▸General population (from narrative review)
Recommended Dose
N/A
Limitations & Caveats
Important context when interpreting this evidence:
- ▸Narrative review design without systematic quantitative synthesis
- ▸No specific effect sizes or controlled trial data reported for this claim
- ▸Potential confounding from other nutritional factors not isolated
Frequently Asked Questions
Which B vitamins are most important for sleep?▼
The review highlights B6, B12, and folate as key cofactors for serotonin and GABA synthesis, which are critical for sleep regulation.
Can B vitamin supplements improve sleep?▼
The review suggests that correcting deficiencies may improve sleep, but does not provide evidence that supplementation in non-deficient individuals is beneficial.
How do B vitamins affect neuronal excitability?▼
B vitamins are cofactors for enzymes that synthesize serotonin and GABA, which are inhibitory neurotransmitters. Deficiency reduces these neurotransmitters, leading to increased neuronal excitability and sleep disruption.
Is this claim based on human studies?▼
The abstract does not specify study types for this claim; it is a narrative review synthesizing evidence, which may include animal and human studies.
References
- 1.Khosropanah A, Hosseini SA, Keshavarz A. “Nutritional modulators of sleep: A narrative review of vitamins, minerals, amino acids, and their neurobiological and chronoepigenetic mechanisms..” Chronobiology international, 2026. PMID: 41992896 DOI: 10.1080/07420528.2026.2648011