Working in rotating night shifts may increase the risk of cardiovascular disease and lung cancer, a new study has warned.

Maybe Lionel Richie and the Commodores were wrong (the song is just title Nightshift, it's a tribute to Marvin Gaye). Night shift work has been consistently associated with higher risk for cardiovascular disease (CVD) and cancer. In 2007 the World Health Organisation classified night shift work as a probable carcinogen due to circadian disruption.

In the new study, researchers found that women working rotating night shifts for five or more years appeared to have a modest increase in all-cause and CVD mortality and those working 15 or more years of rotating night shift work appeared to have a modest in lung cancer mortality.

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