Flavonoids and their role in oxidative stress, inflammation, and human diseases.
Level 5 - mechanism / opinion, no new human data
Narrative review of mechanisms and general literature without systematic search methodology.
PubMed 40147618 · doi:10.1016/j.cbi.2025.111489
What was done
This narrative review summarizes the mechanistic links between oxidative stress, chronic inflammation, and various chronic human diseases, examining the biochemical properties and epidemiological associations of six major dietary flavonoid subclasses.
What was found
The abstract reports no quantitative metrics or numerical findings. It qualitatively describes how structural features, such as hydroxyl group positioning and C2-C3 double bonds, enable flavonoids to chelate metal ions, scavenge reactive oxygen species, modulate proinflammatory cytokines (IL-1β, IL-6, TNF-α), and alter signaling pathways including Nrf2 and Bcl-2.
Why it matters
It provides a structural and mechanistic overview of how dietary polyphenolic compounds may influence inflammatory and oxidative pathways implicated in chronic pathology.
Limits
As a narrative review, it lacks a systematic literature search, formal risk-of-bias evaluation, and quantitative meta-analysis. The abstract provides no primary human trial data, dosing specifics, or in vivo bioavailability measures.
Cited by
- contradicts Quercetin is classified as a flavan-3-ol.