The paper explores how social media use may influence the mental health of 12,041 adolescents in the UK.   

Although of some analytical complexity, it is a methodologically sound study, but the authors are right to include the word 'preliminary' in the title. One of the main conclusions concerns the risk of attributing health effects to adolescents' engagement with social media at a time when their brains are still involved in a complex developmental process that may be influenced by many other factors, such as bullying, family support or the quality or type of education young people receive. The authors are well aware of this and express it clearly, which implicitly tells us, as the title of the paper also openly expresses, that we may be overestimating the influence of the use of social media on the mental health of adolescents.    

The conclusions of the study are therefore limited, although among the results the different effects that the use of social media can have on girls and boys, i.e. the importance of biological sex, are perhaps noteworthy. Those who are involved in the study of this subject will find in this work some useful information in their search for strong conclusions.