In this short video, Oxford University Professor Russell Foster explains that his new findings in neuroscience show that lack of adequate sleep is not just an inconvenience. Sustained sleep disruption or deprivation can now be seen as an early warning system (biomarker) of impending mental illness.

His findings overturn our current ‘knowledge’ that blindness is always associated with a broken sleep/wake circadian system. In fact, our eyes are able to sense light without seeing it. He also discusses how these findings have significant implications for future therapies.