There's fresh insight into the link between bright light and mental health with research revealing modern lifestyles are confusing our bodies and making us sick.
A study of almost 87,000 people published in peer-reviewed journal Nature Mental Health found being exposed to light at night increases a person's risk of psychiatric disorders.
It increased the likelihood of depression by 30 per cent, while also driving up the likelihood of anxiety, bipolar, PTSD severity and self-harm.
