The aim of Health in All Policies (HiAP) is to bring diverse sectors together to find shared solutions; it focuses on identifying 'win-win' or 'cobenefits' such that policy measures contribute not only to improved health outcomes but also to outcomes desired by other sectors, such as education,...

The reciprocal relationship between psychiatric and substance use disorders is well-known, yet it remains largely unknown whether mental health morbidity causally leads to addictive behaviours. This paper utilises a fixed effects instrumental variables model, which is identified by time-varying...