“…Alterations in its concentration may cause damage to the newborn's cognitive and visual development, causing dysfunction and permanent negative effects on IQ and visual acuity (Birch et al., 2005; 2010; De Souza Santos da Costa et al., 2016; Deng et al., 2018; Gómez‐Cortés & De La Fuente, 2017; Jensen et al., 2010; Nishimura et al., 2014; Spector & Kim, 2015; Vega et al., 2012). Human milk may contain trans fatty acids (TFAs), which are unsaturated fatty acids with at least one double bond in the trans configuration (Fernández‐Michel et al., 2008; Islam et al., 2019; Wu et al., 2017). A TFA concentration of 2%–5% has been reported in human milk (Daud et al., 2013; Krešić et al., 2013; Larqué et al., 2001; Samur et al., 2009; Valenzuela, 2008).…”