Screen habits and mental health share genetic roots, study suggests

A genetic study of 16,000 teenagers in Norway suggests that vulnerability to heavy screen use may partly be written in our DNA – and overlaps with the genetics of conditions such as attention-deficit/hyperactivity disorder (ADHD) and depression. Some families are cautious around alcohol or gambling because addiction can run in families. Could something similar be true for excessive screen use – now one of the most common types of behaviour in modern adolescence? “People often think screen use...