Paul Lichtenstein

OBJECTIVES: To determine whether hormonal contraceptives are associated with subsequent risks of suicidal behaviour and depression among women of reproductive age. DESIGN: Nationwide register-based study. SETTING: Swedish national populat…

Chronic overlapping pain conditions (COPCs) by definition, frequently co-occur, perhaps reflecting their shared etiologies. Their overlapping nature presents a methodological challenge, possibly masking associations between COPCs and health…

INTRODUCTION: Research has consistently shown individuals with mental health conditions are more likely to be prescribed opioid analgesic medications and to engage in heavier utilization. However, it is unclear whether these findings apply …

Most psychiatric disorders are moderately to highly heritable. The degree to which genetic variation is unique to individual disorders or shared across disorders is unclear. To examine shared genetic etiology, we use genome-wide genotype da…