Women who are ‘morning people’ are less likely to develop breast cancer than those who are sharpest in the evening, a study suggests.
Research involving more than 400,000 women found ‘larks’ have a breast cancer risk up to 48 per cent lower than ‘night owls’.
The scientists, led by the University of Bristol, also showed women who slept longer than the recommended seven to eight hours a night increased their chances of a diagnosis by 20 per cent for each extra hour spent asleep. One explanation may be that those who function better in the morning have slept better and woken earlier.
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