Trial reportThe American journal of clinical nutrition2025
Gut microbial community and host intestinal gene expression with combined fish oil and soluble corn fiber compared with corn oil and maltodextrin: A randomized crossover trial in healthy older individuals.
Trial report in The American journal of clinical nutrition, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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
3 citing papers in PubMed.
- Spatiotemporal dynamics of the host-tumor metabolic interface: Implications for precision nutritional oncology.Genes & diseases · 2026Review
- Review
- Omega-3 polyunsaturated fatty acids and gut microbiota.Current opinion in clinical nutrition and metabolic care · 2026Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
19 authors.
Funding
Abstract
backgroundConcurrent consumption of dietary fiber and n-3 polyunsaturated fatty acids reduces colon tumor formation. However, their combined effects on colorectal cancer risk remain unexplored in human trials.
objectivesThis study investigated the synergistic effects of fish oil (FO) and fermentable fiber on the gut transcriptional profiles and microbiome composition in older adults.
methodsIn a randomized controlled crossover pilot study, 30 adults (ages 50-75 y), received fermentable fiber (33 g/d soluble corn fiber; SCF) plus eicosapentaenoic acid and docosahexaenoic acid (EPA + DHA as FO, 7.7 g/d) or a comparator (similar doses of maltodextrin plus corn oil; MD + CO) for 30 d, followed by a 60-d washout period before crossing over to the alternate intervention. Serum phospholipid fatty acids, stool exfoliome [ribonucleic acid sequencing (RNAseq)], microbiome (16S ribosomal ribonucleic acid gene sequencing), butyrate kinase (but) gene abundance (digital droplet polymerase chain reaction), and fecal short-chain fatty acids were analyzed. Linear mixed models were used for the majority of outcome analyses. Differential expression and pathway enrichment analyses were applied to RNAseq data, whereas microbiome diversity was assessed using α and β diversity.
resultsSerum EPA and DHA concentrations were higher after SCF + FO than MD + CO supplementation [EPA: β = 0.51; 95% confidence interval: 0.31, 0.72; DHA: β = 0.18; 95% confidence interval: 0.10, 0.27; P < 0.0001]. Analysis of host gut transcriptional networks revealed that SCF + FO supplementation inhibited the glucose-insulin receptor-phosphatidylinositol-3 kinase-signaling axis. Microbiome analysis revealed significant intervention differences in β-diversity (F = 4.4, R
conclusionsThirty-day supplementation of SCF + FO compared with MD + CO showed significant shifts in intestinal cell pathways relevant to colorectal cancer with concomitant differences in gut microbial community structure and butyrate-producing taxa.
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What Socratic holds
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.