Evidence map›Paper›PMID 41069419›Full record

ArticleCurrent developments in nutrition2025

Comparing Mediterranean and Western Diets: Cognitive and Microbiota Effects in Middle-Aged Rats.

Rebecca J Solch-Ottaiano, Colin Harper, Madison Prats, Elizabeth B Engler-Chiurazzi, Blake Ouvrier, Saifudeen Ismael, Gregory Bix, Demetrius M Maraganore

Abstract read
In one paragraph

Article in Current developments in nutrition, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed.

  1. Review
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

8 authors.

Rebecca J Solch-OttaianoDepartment of Neurology, Tulane University School of Medicine, New Orleans, LA, United States.
Colin HarperDepartment of Neurology, Tulane University School of Medicine, New Orleans, LA, United States.
Madison PratsDepartment of Neurology, Tulane University School of Medicine, New Orleans, LA, United States.
Elizabeth B Engler-ChiurazziDepartment of Neurology, Tulane University School of Medicine, New Orleans, LA, United States.
Blake OuvrierClinical Neuroscience Research Center, Tulane University School of Medicine, New Orleans, LA, United States.
Saifudeen IsmaelClinical Neuroscience Research Center, Tulane University School of Medicine, New Orleans, LA, United States.
Gregory BixDepartment of Neurology, Tulane University School of Medicine, New Orleans, LA, United States.
Demetrius M MaraganoreDepartment of Neurology, Tulane University School of Medicine, New Orleans, LA, United States.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: As the global population continues to age, cognitive decline has emerged as a major area of concern. Modifiable lifestyle factors, such as diet, have been associated with the trajectory of brain aging. Dietary patterns such as the Western diet (WD) have been linked to cognitive decline, whereas a Mediterranean diet (MeDi) promotes healthy brain aging. Objectives: This study aimed to compare the effects of MeDi and WD on gut microbiota and cognitive health in middle-aged rats. Our hypothesis was that the MeDi, when introduced to middle-aged rats, would maintain cognitive health and produce a distinct gut microbiota composition relative to a WD. Methods: Twelve-month-old male Fischer344 rats were randomly assigned to MeDi, WD, or chow ( Results: There were trending differences in cognitive function in MeDi rats relative to WD rats. Rats exhibited distinct diet-dependent microbial phenotypes with 28 differentially abundant bacteria, including Conclusions: A longer diet duration may be needed to elicit robust differences in cognitive function driven by the changes in microbiota and neurobiology. This study highlights that a short-term diet introduced in middle age has trending effects on cognitive performance but significantly impacts gut microbiota composition and gene expression of biomarkers of brain health.

Indexed as

agingcognitive functiongut microbiotaMediterranean dietmemoryWestern diet

Identifiers

PMID41069419
PMCPMC12505662

What Socratic holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

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.