Evidence map›Paper›PMID 25402818›Full record

ReviewJournal of medicinal food2014

The gut microbiome and the brain.

Leo Galland

Registry-linked trialAbstract readReview
In one paragraph

Review in Journal of medicinal food, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05119010 (A Pilot Study Evaluating a Ketogenic Diet Concomitant to Nivolumab and Ipilimumab in Patients With Metastatic Renal Cell Carcinoma), which is not on this map. Cited by 306 papers, 11 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
306citing papers in PubMed, 11 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT05119010 naterminatednot on this mapstarted 2023, after this paper: background citation

A Pilot Study Evaluating a Ketogenic Diet Concomitant to Nivolumab and Ipilimumab in Patients With Metastatic Renal Cell Carcinoma

TypeinterventionalSponsorGustave Roussy, Cancer Campus, Grand ParisRan2023 to 2024Enrolled3ConditionsMetastatic Renal Cell CarcinomaArmsContinuous ketogenic diet, Discontinuous ketogenic diet, beta-hydroxybutyrate (BHB) supplementation
3 · Its place in the literature

Who cites it

306 citing papers in PubMed, 11 syntheses or guidelines pooled it.

  1. Pooled it
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  5. Gut Microbiota in Patients with Polycystic Ovary Syndrome: a Systematic Review.Reproductive sciences (Thousand Oaks, Calif.) · 2022
    Pooled it
  6. The microbiota-gut- hippocampus axis.Frontiers in neuroscience · 2022
    Pooled it
  7. Pooled it
  8. Pooled it
  9. Potential of Salivary Biomarkers in Autism Research: A Systematic Review.International journal of molecular sciences · 2021
    Pooled it
  10. Pooled it
  11. The Effects of Milk and Dairy Products on Sleep: A Systematic Review.International journal of environmental research and public health · 2020
    Pooled it
  12. Trial
  13. Trial
  14. Trial
  15. Trial
  16. Review
  17. Article
  18. Review
  19. The Microbiota as a Potential Cause of Disease.Diseases (Basel, Switzerland) · 2026
    Review
  20. Review

246 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

1 author.

Leo GallandFoundation for Integrated Medicine , New York, New York, USA .

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The human gut microbiome impacts human brain health in numerous ways: (1) Structural bacterial components such as lipopolysaccharides provide low-grade tonic stimulation of the innate immune system. Excessive stimulation due to bacterial dysbiosis, small intestinal bacterial overgrowth, or increased intestinal permeability may produce systemic and/or central nervous system inflammation. (2) Bacterial proteins may cross-react with human antigens to stimulate dysfunctional responses of the adaptive immune system. (3) Bacterial enzymes may produce neurotoxic metabolites such as D-lactic acid and ammonia. Even beneficial metabolites such as short-chain fatty acids may exert neurotoxicity. (4) Gut microbes can produce hormones and neurotransmitters that are identical to those produced by humans. Bacterial receptors for these hormones influence microbial growth and virulence. (5) Gut bacteria directly stimulate afferent neurons of the enteric nervous system to send signals to the brain via the vagus nerve. Through these varied mechanisms, gut microbes shape the architecture of sleep and stress reactivity of the hypothalamic-pituitary-adrenal axis. They influence memory, mood, and cognition and are clinically and therapeutically relevant to a range of disorders, including alcoholism, chronic fatigue syndrome, fibromyalgia, and restless legs syndrome. Their role in multiple sclerosis and the neurologic manifestations of celiac disease is being studied. Nutritional tools for altering the gut microbiome therapeutically include changes in diet, probiotics, and prebiotics.

Indexed as

Adaptive ImmunityBrainDietGastrointestinal TractHumansHypothalamo-Hypophyseal SystemImmunity, InnateMicrobiotaNeurosecretory SystemsPituitary-Adrenal SystemD-lactic acidendotoxinmicrobial endocrinologymicrobiomeprebioticsprobioticsshort-chain fatty acidstrimethylamine oxide (TMAO)

Identifiers

PMID25402818
PMCPMC4259177

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.