Compared with C‐allele homozygotes, children with the FAAH 385A allele – associated with higher AEA levels – exhibited lower FA of the left fornix and parahippocampal cingulum, which are frontolimbic pathways critically involved in stress and anxiety regulation (Bubb, Metzler‐Baddeley, & Aggleton, 2018; Senova, Fomenko, Gondard, & Lozano, 2020). This evidence concerns the gene FAAH and Anxiety.