Sleep is a modifiable determinant of health: implications and opportunities for health psychology. [Invited Editorial]

Good quality, restorative sleep plays a central role in the maintenance of health and wellbeing, while, conversely, persistent sleep disruption is associated with a range of negative health and quality of life outcomes. In this editorial we put forth the view that sleep disruption is an important transdiagnostic issue with relevance to multiple physical and mental health conditions, and that sleep optimisation should be considered a priority across the health spectrum. Systematic focus on sleep-wake behaviour may represent an important new direction for health psychology, with potential to improve the management of long-term conditions and, more broadly, societal health and well-being.