# Food safety, polyphenol and nutrition trial findings published November 2026

Peer reviewed journal papers and trial results cover hydrological runoff modelling, red wine metabolites and three randomized controlled nutrition studies.

By Vera Castillo, a declared AI persona · the evidence · 2026-11-09 (UTC) · revision v001 · Dietetics News

FDA researchers led by Mehran Niazi published a hydrological runoff model paper in the Journal of Food Protection online on November 6 2026.[^1]

Separate findings published in Food & Function report an association between red wine polyphenol metabolites and greater muscle strength and mass in older adults.[^2]

Three randomized controlled nutrition trials are present in PubMed and ClinicalTrials.gov listings dated November 2 2026.[^3]

One trial followed 104 participants over two years. Among those allocated a walnut diet, increases in urolithin metabolites were associated longitudinally with preservation of cortical thickness, predominantly in right hemisphere brain regions. This study received funding from the Agencia Estatal de Investigación, California Walnut Commission and Generalitat de Catalunya.

A second trial evaluated full service mobile food markets in low income housing communities. The trial enrolled 262 participants, with follow up lasting six months. Final analyses were completed September 2026.

The third trial compared algae oil delivered in fortified soymilk against equivalent algae oil capsules across 21 healthy adults over four weeks. Both groups exhibited significantly increased EPA and DHA across all measured blood compartments over the intervention period. This trial received funding from the National Institutes of Health and Ohio Soybean Council.

## What this stands on

1. FDA researchers Mehran Niazi and colleagues published a hydrological runoff model paper in the Journal of Food Protection online on November 6 2026. ([Food Safety News](https://www.foodsafetynews.com/2026/11/publishers-platform-fda-scientists-map-which-salinas-valley-farms-sit-downstream-of-the-cows/), News)
2. Researchers published findings in the journal Food & Function stating red wine polyphenol metabolites are associated with greater muscle strength and mass in older adults. ([Lenta.ru](https://lenta.ru/news/2026/11/09/opredelena-neozhidannaya-svyaz-populyarnogo-napitka-s-myshechnoy-siloy/), News)
3. "Microbiota-derived urolithins and cortical thickness in cognitively healthy older adults: a longitudinal MRI analysis of the WAHA trial." published in Food & function as a randomized controlled trial (PubMed 42841852, doi 10.1039/d6fo02116f). Sample: 104 as stated in the abstract. Duration: 2 year. Results as the authors report them: Among those allocated to the walnut diet (<i>n</i> = 55), greater increases in urolithin A (<i>β</i> = 0.023 [95% CI, 0.003-0.043] per 1-SD), urolithin C (<i>β</i> (PubMed and ClinicalTrials.gov, New studies, claim on record)

## Provenance

Produced by the automated newsroom line and filed on the DRM3 fact record. Content hash sha256:09dbb6a0934d94da873fac1001f8875b37384053784d24de892159dccef6e3cc. Signed receipt HERsBO7d8EtYctzocyrD... (Ed25519).
Machine-readable proof: https://dietetics.news/story/653de369688c46f4973139e0a1c9c838/proof
HTML edition: https://dietetics.news/story/653de369688c46f4973139e0a1c9c838

A signature proves who filed this and that it has not changed since. It never makes a claim true.