“…We have searched PubMed for human intervention studies, which have identified and quantified LMW phenolic metabolites in human blood using diets rich in (poly)phenols or using flavonoid supplementation. In total, we have identified 42 intervention studies that employed either (i) dietary sources such as fruits or derivates thereof (e.g., juice, fruits, cake, coffee) in a single dose (Supplementary Table 2), (ii) dietary sources in multiple doses (Supplementary Table 3), or (iii) supplementation using plant extracts or pure flavonoids in capsules (Supplementary Table 4) (Azzini et al., 2010; Bresciani et al., 2017; Caccetta et al., 2000; Castello et al., 2018; Curtis et al., 2019; Czank et al., 2013; Rachel M. de Ferrars, Czank et al., 2014; R. M. de Ferrars, Cassidy et al., 2014; de la Torre et al., 2003; R. Feliciano et al., 2017; R. Feliciano, Istas, et al., 2016; R. P. Feliciano, A. Boeres, et al., 2016; Henning et al., 2013; Keane et al., 2015; Koli et al., 2010; Lang et al., 2013; Li et al., 2000; Loke et al., 2009; Ludwig et al., 2015; McKay et al., 2015; Mueller et al., 2017; Ottaviani et al., 2016; Pereira‐Caro et al., 2020; Pimpão et al., 2015; Prymont‐Przyminska et al., 2016, 2014; Rodriguez‐Mateos et al., 2016, 2014; Rodriguez‐Mateos, Rendeiro, et al., 2013; Russell et al., 2009; Sandhu et al., 2018; Scherbl et al., 2016; Stalmach et al., 2012, 2009, 2014; Suárez et al., 2009; Urpi‐Sarda et al., 2009; van der Pijl et al., 2015; van Duynhoven et al., 2014; Vitaglione et al., 2007; Zhang & Zuo, 2004; Zhong et al., 2017).…”