Night shift work raises cancer risk: Study 

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July 31, London: A new study reveals that higher levels of sex hormones at the ‘wrong’ time may be caused for increased cancer risk in night shift workers.

The study by Pompeu Fabra University in Barcelona, Spain said that people who work night shifts may be more at risk of breast or prostate cancer because of hormonal changes. Work that involves night shift was previously linked to a raised cancer risk, but the reason for the same was not clear.

The study suggested that increased levels of sex hormones, such as oestrogen and testosterone, at the wrong time might be to blame, Daily Mail reported.

More than 100 people who worked different shifts gave urine samples across a 24-hour period. Their hormone levels were also measured. Night workers were found to have significantly higher levels of sex hormones at the wrong time, such as testosterone peaking between 10am and 2pm, rather than between 6am and 10am.

The Oslo Times

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