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Health

No cancer risk from night shifts

5 June 2019

Night shifts don’t increase the risk of breast cancer, a 10-year study of UK women suggests. It was thought that being under artificial lights makes night workers produce less of the night hormone melatonin, leading to more oestrogen production, which can affect breast tumour growth. Now data from 102,869 women suggests this may not be the case (British Journal of Cancer, ).

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