“…Two studies had findings confounded by either smoking (Papamichael et al, 2004) or olive oil consumption (Karatzi et al, 2008), and one study only reported alcohol use over the past 30 days (yes/no) with no information on the amount of alcohol consumed (Hill et al, 2020). For these reasons, we excluded these 13 studies, and therefore, 31 studies met inclusion criteria and were included in the research synthesis (Agewall et al, 2000; Andrade et al, 2009; Bau et al, 2005; Boban et al, 2006; van Bussel et al, 2018; Coimbra et al, 2005; Cuevas et al, 2000; Djousse et al, 1999; Di Gennaro et al, 2007, 2012; Goslawski et al, 2013; Hampton et al, 2010; Hashimoto et al, 2001; Hijmering et al, 2007; Huang et al, 2010; Karatzi et al, 2004, 2013; Luo et al, 2017; Maiorano et al, 1999; Muggeridge et al, 2019; Oda et al, 2017, 2020; Schaller et al, 2010; Spaak et al, 2008; Suzuki et al, 2009; Tanaka et al, 2016; Teragawa et al, 2002; Vlachopoulos et al, 2003; Whelan et al, 2004; Zilkens et al, 2003, 2005). Among these studies, only six studies were published within the past 5 years.…”