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Professor Russell Foster writes about circadian rhythm and health on the online news platform 'The Conversation'

We are only beginning to unravel the genetic and biochemical basis of mental illness – a vague term including conditions as diverse as anxiety, depression, and mood and psychotic disorders. With millions of people suffering from such conditions, it is crucial that we find ways to improve diagnosis and treatment. But an increasing body of scientific evidence is now suggesting that we should turn our attention to one of our most basic functions: sleep.

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