Diferentemente da conclusão divulgada em 2007 (provavelmente cancerígeno para humanos) a nova revisão da IARC conclui que "there was limited evidence that night shift work causes breast, prostate, and colorectal cancer."
It is s not a worker's age, but how long they have been in the job that determines the level of risk, according to a major review. The paper concludes there should be renewed efforts to raise awareness of the issue, introduce protective policies and to ensure “worker empowerment.”