SynthesisInternational journal of molecular sciences2023
Age-Related Cognitive Decline, Focus on Microbiome: A Systematic Review and Meta-Analysis.
Synthesis in International journal of molecular sciences, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers, 1 of them a synthesis that pooled 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.
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.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
31 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Effectiveness of Non-Pharmacological Interventions for Sleep Disorders in Enhancing Quality of Life, Cognitive Function, and Sleep Quality in Older Adults with Mild Cognitive Impairment: A Systematic Review and Meta-Analysis.Medicina (Kaunas, Lithuania) · 2025Pooled it
- Article
- Gut Microbiota-Targeted Nutrition for Healthy Aging: Mechanistic Roles of Polyphenols and Dietary Fiber in Geroscience.Nutrients · 2026Review
- Perioperative neurocognitive disorders in older patients: a narrative review of current knowledge in 2026.Perioperative medicine (London, England) · 2026Review
- Mind the Gut: Cognitive Decline, Microbiota, and Nutrition-Related Modulators in Older Adults with Chronic Kidney Disease.Nutrients · 2026Review
- Review
- Integrated Chemometric and Machine Learning Analysis Identifies Peripheral Biosignatures Distinguishing Major Depressive Disorder from Bipolar Disorder: A Translational Cross-Sectional Study.Medicina (Kaunas, Lithuania) · 2026Article
- Comparative Evaluation of Different Fruit Parts ofFoods (Basel, Switzerland) · 2026Article
- Pooled prevalence of psychological distress and mental health conditions in older adults with inflammatory bowel disease: a protocol for a systematic review and meta-analysis.Systematic reviews · 2026Article
- Gut Microbiota Impact on Cognitive Function in Humans.Nutrients · 2026Review
- Review
- Measuring and decomposing inequalities in intrinsic capacity among older adults in china: from an urban-rural divide perspective.Aging clinical and experimental research · 2025Article
- The association between gut microbiota and functional connectivity in cognitive impairment of first-episode major depressive disorder.Translational psychiatry · 2025Article
- Comparing Mediterranean and Western Diets: Cognitive and Microbiota Effects in Middle-Aged Rats.Current developments in nutrition · 2025Article
- The gut microbial composition is different in chronic fatigue syndrome than in healthy controls.Scientific reports · 2025Article
- Synbiotics in Alzheimer's disease: mechanisms, clinical evidence, and therapeutic prospects.Journal of translational medicine · 2025Review
- Gut Microbiota and Exercise: Probiotics to Modify the Composition and Roles of the Gut Microbiota in the Context of 3P Medicine.Microbial ecology · 2025Review
- Systemic IGF-1 administration prevents traumatic brain injury induced gut permeability, dysmorphia, dysbiosis, and the increased number of immature dentate granule cells.Acta neuropathologica communications · 2025Article
- Fibromyalgia, Depression, and Autoimmune Disorders: An Interconnected Web of Inflammation.Biomedicines · 2025Review
- Maternal Gut Microbiome-Mediated Epigenetic Modifications in Cognitive Development and Impairments: A New Frontier for Therapeutic Innovation.Nutrients · 2024Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Aging is a complex process influenced by genetics and the environment, leading to physiological decline and increased susceptibility to diseases. Cognitive decline is a prominent feature of aging, with implications for different neurodegenerative disorders. The gut microbiome has gained attention for its potential impact on health and disease, including cognitive function. This systematic review and meta-analysis aimed to investigate the relationship between the gut microbiome and cognitive function in the context of aging. Following PRISMA guidelines, a comprehensive search strategy was employed in PubMed, Scopus, and Web of Science databases. Studies exploring the role of the microbiome in cognition and neurodegenerative disorders, published between 2013 and 2023, were included. Data extraction and quality assessment were performed. Quantitative synthesis using statistical analyses was performed to examine microbial diversity and relative abundance in various cognitive conditions. Sixteen studies involving a total of 1303 participants were included in the analysis. The gut microbiota's relative abundance was different in individuals with cognitive impairments such as Alzheimer's disease, Parkinson's disease, and dementia, compared to the healthy controls. The most prevalent phyla affected were Firmicutes, Bacteroidetes, Actinobacteria, and Proteobacteria. Meta-analyses indicated substantial heterogeneity among studies focusing on Alzheimer's disease. The overall quality of evidence related to microbial analysis was moderate. The gut microbiome's role in cognitive decline and neurodegenerative disorders warrants investigation. Altered microbial abundance, particularly in specific phyla, is associated with cognitive impairments. However, variations in study findings and methodologies highlight the complexity of the relationship between the gut microbiome and cognitive function. Further studies are needed to better understand the mechanisms underlying this connection and its potential implications for aging and cognitive health.
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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 Socratic graph.