“…Although, there has been little research into the role ACEs play in adolescent drug use in comparison to research focusing on the relationship between ACEs and adolescent alcohol use/problematic alcohol drinking or/and smoking ( Hughes et al, 2017 ), a recent combined analysis using data from five non-representative UK cross-sectional studies highlighted a graded relationship between the number of ACEs and the risk of drug use, with ACEs accounting for 58.8% and 52.6% of drug use in the Welsh and the English sample accordingly ( Hughes et al, 2020 ). Similarly a recently published systematic review and metanalysis ( Hughes et al, 2021 ) using data from 17 studies conducted in 13 European countries (UK, Romania, Lithuania, Latvia, Russia, North Macedonia, Turkey, Montenegro, Serbia, Ukraine, Czech Republic, Poland and Moldova) found a graded positive relationship, with a reported 59% increased risk of drug use with exposure to 1 ACE and a 163% increased risk of drug use with exposure to 2 or more ACEs. Similar graded relationships between ACEs and drug use have been reported from individual studies conducted in the US ( Anda et al, 2006 ) and India ( Fernandes et al, 2021 ).…”