“…However, although the contribution of the environment to the origins and development of DD has not been sufficiently analysed, and the literature on this topic is scarce and fragmented [ 43 ], there is evidence to support the fact that the perinatal and postnatal periods can be critical in terms of reading ability [ 38 , 43 , 44 ]. Different perigestational and neonatal complications, such as iodine deficiency during pregnancy, prematurity, insufficient intrauterine growth, hyperbilirubinaemia and neonatal hyperglycaemia, among others, have been described and may significantly affect neurodevelopment, causing atypical cognitive development that could lead to the presence of reading difficulties [ 38 , 45 , 46 , 47 , 48 , 49 ].…”