Scientists map the wiring of the biological clock
"The connections make the clock precise but also let it adjust to changes in day/night cycles."
Night Work May Impair Glucose Tolerance
"A new study suggests that night work may impair glucose tolerance, supporting a causal role of night work in the increased risk of Type 2 diabetes among shift workers."
Study links workplace daylight exposure to sleep, activity and quality of life
"Enhancing indoor lighting may improve office workers' physical well-being and sleep quality."
Delayed sleep phase disorder
"Delayed sleep-phase disorder (DSPD), also known as delayed sleep-phase syndrome (DSPS) or delayed sleep-phase type (DSPT), is a circadian rhythm sleep disorder affecting the timing of sleep, peak period of alertness, the core body temperature rhythm, hormonal and other daily rhythms, compared to the general population and relative to societal requirements."