Micronutrients & recovery
Interindividual variability in flavonoid metabolism, driven by genetics, microbiome composition, and age/sex, creates heterogeneous health outcomes, meaning population-level benefits do not guarantee individual efficacy.
Don't assume all flavonoid sources (berries, tea, cocoa) will affect you identically. Your gut bacteria and genetics dictate whether you convert these foods into active metabolites. If you don't see benefits from one source, try a different flavonoid subclass or food matrix, as your 'converter' status may vary by compound.
At a population level, there is growing evidence of the beneficial effects of dietary flavonoids on health. However, there is extensive heterogeneity in the response to increased intake, which is likely mediated via wide interindividual variability in flavonoid absorption and metabolism.
Why this rating
The paper is a narrative review citing numerous prospective studies and RCTs, but explicitly states that definitive conclusions on specific genetic impacts are currently inadequate.
Source
The role of metabolism (and the microbiome) in defining the clinical efficacy of dietary flavonoids
Aedín Cassidy et al. · American Journal of Clinical Nutrition · 2016
DOI 10.3945/ajcn.116.136051
More from this paper
- The gut microbiome plays a critical role in converting unabsorbed flavonoids into bioactive metabolites (e.g., equol from isoflavones, phenolic acids), and the ability to produce these metabolites is a key determinant of health efficacy.Good
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