ArticleFoods (Basel, Switzerland)2020
A Review of Registered Clinical Trials on Dietary (Poly)Phenols: Past Efforts and Possible Future Directions.
Article in Foods (Basel, Switzerland), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 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
38 citing papers in PubMed, 1 synthesis or guideline pooled it, 69 citations in OpenAlex.
- Efficacy of Dietary Polyphenols from Whole Foods and Purified Food Polyphenol Extracts in Optimizing Cardiometabolic Health: A Meta-Analysis of Randomized Controlled Trials.Advances in nutrition (Bethesda, Md.) · 2023Pooled it
- A Polyphenol-Rich Diet Increases the Gut Microbiota Metabolite Indole 3-Propionic Acid in Older Adults with Preserved Kidney Function.Molecular nutrition & food research · 2022Trial
- Trial
- Effects of a Fruit and Vegetable-Based Nutraceutical on Biomarkers of Inflammation and Oxidative Status in the Plasma of a Healthy Population: A Placebo-Controlled, Double-Blind, and Randomized Clinical Trial.Molecules (Basel, Switzerland) · 2021Trial
- Cardioprotective Potential of Grape-Derived Polyphenols in Cancer Therapy-Related Cardiotoxicity.International journal of molecular sciences · 2026Review
- Polyphenol Composition, Antioxidant Properties, and Health Benefits of Moroccan-Cultivated Raspberries, Blackberries, and Blueberries: A Comprehensive Review.Foods (Basel, Switzerland) · 2026Review
- Pilot Trial ofCurrent developments in nutrition · 2026Article
- Dietary Polyphenol Combinations Have a Multifaceted Inhibitory Effect on Metabolic Rewiring and Signaling Pathways in Neuroblastoma.Pharmaceuticals (Basel, Switzerland) · 2025Article
- Flavonoids for gastrointestinal tract local and associated systemic effects: A review of clinical trials and future perspectives.Journal of advanced research · 2025Review
- Polyphenol-Mediated Peptide Assembly Modulates Melittin Toxicity: A Structure-Activity Strategy for Neutralizing the Interface Affinity of Pore-Forming Toxins to Cell Membranes.ACS applied materials & interfaces · 2025Article
- Review
- Natural Antioxidants Reduce Oxidative Stress and the Toxic Effects of RNA-CUGAntioxidants (Basel, Switzerland) · 2025Article
- Plant Polyphenols as Heart's Best Friends: From Health Properties, to Cellular Effects, to Molecular Mechanisms of Action.International journal of molecular sciences · 2025Review
- Dietary polyphenols and human health: sources, biological activities, nutritional and immunological aspects, and bioavailability- a comprehensive review.Frontiers in immunology · 2025Review
- Metatranscriptomics-guided discovery and characterization of a polyphenol-metabolizing gut microbial enzyme.Cell host & microbe · 2024Article
- Polyphenols Regulate the Activity of Endocrine-Disrupting Chemicals, Having Both Positive and Negative Effects.Journal of xenobiotics · 2024Review
- Review
- A Healthful Plant-Based Diet as an Alternative Dietary Approach in the Management of Metabolic Dysfunction-Associated Steatotic Liver Disease.Nutrients · 2024Review
- Hypotensive and Endothelium-Dependent Vasorelaxant Effects of Grayblue Spicebush Ethanol Extract in Rats.Foods (Basel, Switzerland) · 2023Article
- Theoretical Insights into the Oxidative Stress-Relieving Properties of Pinocembrin─An Isolated Flavonoid from Honey and Propolis.The journal of physical chemistry. B · 2023Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
In recent years, the increasing number of studies on polyphenol demonstrates the efforts in elucidating the potential role of these bioactives on human health. This study reviews the main topics and characteristics of clinical trials on polyphenols registered over the last 20 years, in order to track past and current efforts as well as to highlight the main research gaps in this field. The review was conducted by collecting trials registered in ClinicalTrials.gov and International Standard Randomised Controlled Trial Number (ISRCTN) registry. Overall, 750 clinical trials were selected and included in the final evaluation. Most of the trials were performed on extracts or pure compounds followed by studies conducted on polyphenol-rich foods, in particular berries. A total of 520 clinical trials focused on health effects, 55 on bioavailability, and 175 on both. Regarding outcomes, 139 registered intervention studies had the lipid profile and blood pressure as primary outcomes. The overview provided by this analysis also emphasizes the emerging interest in new outcomes related to polyphenols intervention such as microbiota composition and the evaluation of inter-individual variability in response to the intake of polyphenols. Our review underlines the need of further trials covering unexplored or debated research aspects and provides insights for the design and development of future intervention studies and related research areas.
Indexed as
Identifiers
What OpenQuestion 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 OpenQuestion graph.