ArticleScientific reports2016
The metabolome of [2-(14)C](-)-epicatechin in humans: implications for the assessment of efficacy, safety, and mechanisms of action of polyphenolic bioactives.
Article in Scientific reports, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT06086145 (Flavanol Intake in Davis), which is not on this map. Cited by 89 papers, 4 of them syntheses 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.
Flavanol Intake in Davis (FID) Study: Biomarker-estimated Habitual (-)-Epicatechin and Flavanol Intake in Adults
Who cites it
89 citing papers in PubMed, 4 syntheses or guidelines pooled it, 249 citations in OpenAlex.
- Effect of an (-)-Epicatechin Intake on Cardiometabolic Parameters-A Systematic Review of Randomized Controlled Trials.Nutrients · 2022Pooled it
- Fine wine or sour grapes? A systematic review and meta-analysis of the impact of red wine polyphenols on vascular health.European journal of nutrition · 2021Pooled it
- Effects of Cocoa-Derived Polyphenols on Cognitive Function in Humans. Systematic Review and Analysis of Methodological Aspects.Plant foods for human nutrition (Dordrecht, Netherlands) · 2020Pooled it
- Systematic review of the effects of the intestinal microbiota on selected nutrients and non-nutrients.European journal of nutrition · 2018Pooled it
- Dietary flavanols preserve upper- and lower-limb endothelial function during sitting in high- and low-fit young healthy males.The Journal of physiology · 2026Trial
- Effect of cocoa flavanol supplementation for the prevention of cardiovascular disease events: the COcoa Supplement and Multivitamin Outcomes Study (COSMOS) randomized clinical trial.The American journal of clinical nutrition · 2022Trial
- Trial
- Cocoa Flavanols Improve Vascular Responses to Acute Mental Stress in Young Healthy Adults.Nutrients · 2021Trial
- Dietary flavanols improve cerebral cortical oxygenation and cognition in healthy adults.Scientific reports · 2020Trial
- Cocoa to Improve Walking Performance in Older People With Peripheral Artery Disease: The COCOA-PAD Pilot Randomized Clinical Trial.Circulation research · 2020Trial
- Trial
- Gene expression changes by high-polyphenols cocoa powder intake: a randomized crossover clinical study.European journal of nutrition · 2019Trial
- Flavanol Bioavailability in Two Cocoa Products with Different Phenolic Content. A Comparative Study in Humans.Nutrients · 2019Trial
- Assessing the respective contributions of dietary flavanol monomers and procyanidins in mediating cardiovascular effects in humans: randomized, controlled, double-masked intervention trial.The American journal of clinical nutrition · 2018Trial
- Trial
- Excretion of Avenanthramides, Phenolic Acids and their Major Metabolites Following Intake of Oat Bran.Molecular nutrition & food research · 2018Trial
- How Gut Microbes Transform Dietary Phytonutrients: Enzymatic Pathways and Human Metabolite Exposure.Molecules (Basel, Switzerland) · 2026Review
- Adhering to dietary guidelines does not yield flavanol intake levels associated with beneficial cardiovascular effects.Food & function · 2026Article
- Flavonoids as Nutraceuticals to Treat Inflammatory Diseases: Focusing on Quercetin, Kaempferol, Luteolin, Apigenin, Epicatechin and Their Effects on Hepatic, Nervous, and Pulmonary Systems.Foods (Basel, Switzerland) · 2026Review
- How Polyphenol Metabolites Spatiotemporally Reprogram Transcription Factors and Human Proteostasis: A Metabolite-Centric Framework.Current issues in molecular biology · 2026Review
29 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Diet is a major life style factor affecting human health, thus emphasizing the need for evidence-based dietary guidelines for primary disease prevention. While current recommendations promote intake of fruit and vegetables, we have limited understanding of plant-derived bioactive food constituents other than those representing the small number of essential nutrients and minerals. This limited understanding can be attributed to some extent to a lack of fundamental data describing the absorption, distribution, metabolism and excretion (ADME) of bioactive compounds. Consequently, we selected the flavanol (-)-epicatechin (EC) as an example of a widely studied bioactive food constituent and investigated the ADME of [2-(14)C](-)-epicatechin (300 μCi, 60 mg) in humans (n = 8). We demonstrated that 82 ± 5% of ingested EC was absorbed. We also established pharmacokinetic profiles and identified and quantified >20 different metabolites. The gut microbiome proved to be a key driver of EC metabolism. Furthermore, we noted striking species-dependent differences in the metabolism of EC, an insight with significant consequences for investigating the mechanisms of action underlying the beneficial effects of EC. These differences need to be considered when assessing the safety of EC intake in humans. We also identified a potential biomarker for the objective assessment of EC intake that could help to strengthen epidemiological investigations.
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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.