“… this is the largest randomised controlled trial of a psychological intervention for a mental health problem. It provides strong evidence that insomnia is a causal factor in the occurrence of psychotic experiences and other mental health problems.”
The full title of this paper – published Sept. 2017 in The Lancet Psychiatry – is “The effects of improving sleep on mental health (OASIS): a randomised controlled trial with mediation analysis”.
Sleep difficulties might be a contributory causal factor in the occurrence of mental health problems. If this is true, improving sleep should benefit psychological health. We aimed to determine whether treating insomnia leads to a reduction in paranoia and hallucinations …”
Read more here.