Paul Lichtenstein

Recreational screen use and internalizing problems from preadolescence to young adulthood in a longitudinal twin cohort with co-twin comparison

Abstract The mental health impact of increasing recreational screen use among youth has raised substantial concerns, yet questions about causality remain unresolved. Here, leveraging a co-twin control design, we examined associations between screen use and internalizing problems...

Lifetime substance use disorder and suicidal behaviour: a population-based familial co-aggregation register study

Abstract Substance use disorders (SUD) are associated with suicidal behaviour, but less is known regarding the extent to which familial factors influence these associations across different types of SUD. We performed a national register study including 4,209,615 individuals born...

Genome-wide analysis of social behaviour across social domains, reporters and developmental stages: a meta-regression approach

Abstract Social behaviour is a heritable trait linked to well-being and mental health, yet it varies across social context, including social domains, informants and development, which may shape its underlying genomic architecture. Here, we conducted a genome-wide meta-regression...

Familial Co‐Aggregation of Neurodevelopmental Conditions and Childhood‐Onset Type 1 Diabetes

ABSTRACT Aim Childhood‐onset Type 1 diabetes (T1D) is associated with neurodevelopmental conditions (NDCs). We examined whether this association extends to relatives and assessed phenotypic, genetic, and environmental correlations between T1D and NDCs. Methods Using Swedish regis...