Melatonin, sleep disturbance and cancer risk.

  title={Melatonin, sleep disturbance and cancer risk.},
  author={David E. Blask},
  journal={Sleep medicine reviews},
  volume={13 4},
The pineal hormone melatonin is involved in the circadian regulation and facilitation of sleep, the inhibition of cancer development and growth, and the enhancement of immune function. Individuals, such as night shift workers, who are exposed to light at night on a regular basis experience biological rhythm (i.e., circadian) disruption including circadian phase shifts, nocturnal melatonin suppression, and sleep disturbances. Additionally, these individuals are not only immune suppressed, but… CONTINUE READING