VideoThe science of cannabis: Can it really help our mental health? Cannabis was long thought to harm mental health but is now prescribed as a treatment. Psychopharmacologist Val Curran looks at the evidence Video
HealthWe still don't know whether vaping is safe or not Vaping was once thought to be "95 per cent safer than smoking", but a sudden rise in deaths and injury linked to e-cigarettes is causing some people to reconsider Insight