What does this research mean for the field?

Chronic substance use induces gut dysbiosis that impairs intestinal barrier function, activates systemic inflammation, and modulates reward sensitivity via the gut-brain axis, making the microbiome a key modifiable target in addiction biology. Novelty: ClaimNovelty.SYNTHESIS. Consensus alignment: ConsensusAlignment.ESTABLISHES_NEW_DIRECTION.

What question did this study set out to answer?

This review aims to synthesize evidence on how chronic substance use impacts gut microbiota and its functions.

July 4, 2026Medical SciencesOpen Access

The Gut Microbiota in Addiction Biology: A Systematic Review of Substance-Induced Dysbiosis and Gut–Brain Axis Alterations

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Authors

JEJuan Esparza-Sánchez DGDiego Alejandro Garibi-Miranda MCMarco Chávez-Tinoco

Discussion

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Overview

Systematic review characterizes gut microbiota alterations from chronic substance use, suggesting new intervention targets.

Key Points

This review aims to synthesize evidence on how chronic substance use impacts gut microbiota and its functions.
Conducted systematic review according to PRISMA 2020 guidelines across multiple electronic databases.
Screened 91,421 records, resulting in 60 studies included for qualitative analysis.
Characterized microbial changes associated with substance use across different types.
Chronic substance exposure generally causes dysbiosis with reduced beneficial bacteria and increased opportunistic pathogens.
Alcohol significantly reduces microbial diversity and richness.
Altered gut microbiota associated with impaired intestinal barrier function and systemic inflammation mechanisms.

Cite This Study

Esparza-Sánchez et al. (2026) studied this question.

synapsesocial.com/papers/6a48a78b89561a0c2d78ee28 https://doi.org/10.3390/medsci14030367

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July 4, 2026Medical SciencesOpen Access

The Gut Microbiota in Addiction Biology: A Systematic Review of Substance-Induced Dysbiosis and Gut–Brain Axis Alterations

View Full Paper

Ask AI

Bookmark

Authors

JEJuan Esparza-Sánchez DGDiego Alejandro Garibi-Miranda MCMarco Chávez-Tinoco

Discussion

Member takes

Overview

Systematic review characterizes gut microbiota alterations from chronic substance use, suggesting new intervention targets.

Key Points

This review aims to synthesize evidence on how chronic substance use impacts gut microbiota and its functions.
Conducted systematic review according to PRISMA 2020 guidelines across multiple electronic databases.
Screened 91,421 records, resulting in 60 studies included for qualitative analysis.
Characterized microbial changes associated with substance use across different types.
Chronic substance exposure generally causes dysbiosis with reduced beneficial bacteria and increased opportunistic pathogens.
Alcohol significantly reduces microbial diversity and richness.
Altered gut microbiota associated with impaired intestinal barrier function and systemic inflammation mechanisms.

Cite This Study

Esparza-Sánchez et al. (2026) studied this question.

synapsesocial.com/papers/6a48a78b89561a0c2d78ee28 https://doi.org/10.3390/medsci14030367

View Full Paper

Ask AI

Bookmark