Waking early keeps away breast cancer?

Waking up early in the morning may prevent your risk of developing breast cancer than those sleeping late, according to a study.

For the new study, an international team led by researchers from the University of Bristol in the UK analysed the potential effects of sleep habits on breast cancer risk.

They examined data of 4,09,167 women, from two high-quality resources, using a technique called Mendelian randomisation, and analysed genetic variants associated with three particular sleep traits.

The results showed early risers had a slightly lower risk of breast cancer (one less woman per 100) than those in the evening preference. Little evidence was seen for sleep duration and insomnia symptoms.

However, the effect is likely to be smaller than that of other known risk factors for breast cancer, such as BMI and alcohol intake, the researchers stressed.

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