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Morning people 'less likely to develop breast cancer'

09 November 2018

Morning people who peak in the early hours of the day are less at risk of breast cancer compared to their "evening" counterparts, a study has found.

Part of the analysis also showed that women who slept longer than the recommended seven to eight hours per night increased their chances of being diagnosed by 20 per cent per additional hour spent asleep.

In a final note to wrap up the series of activities, Hospital Manager, Mrs. Wilhelmina Banful said Medifem embarked on the activities as part of efforts to raise awareness on breast cancer which is killing many people especially women in Ghana and urged the general public to go for regular screening. The team presented their findings at the NCRI Cancer Conference in Glasgow, Scotland, while their paper, published on bioRxiv, awaits peer review.

According to the World Health Organisation (WHO), breast cancer is the most frequent cancer among women, impacting 2.1 million women each year and causes the greatest number of cancer-related deaths.

But they caution that it's too early to say whether being a night owl actually increases the risk of cancer or whether their preference for the evening is symptom of another, unknown risk factor. They used a clever new way of analysing data - called Mendelian randomisation.

The researchers believe their findings have implications for policy-makers and employers. The Breast Cancer Walk, which centered at the Manhattanville College Campus and directed its way up to SUNY Purchase, totaled five kilometers.

Their analysis revealed that women with a preference for mornings reduced the risk of breast cancer by 40%, compared with being an evening type.

Breast Cancer walks, such as this one, take place around the country and aid in finding a cure and raising awareness for this disease.

Because these bits of DNA are set at birth and are not linked to other known causes of cancer, like obesity, it means the researchers are reasonably confident body clocks are involved in cancer.

Researchers from the University of Bristol have analysed the link between sleeping patterns and breast cancer in women.

The study was funded by Cancer Research UK and the Medical Research Council.

So will a good night's sleep stop me getting cancer?

Age and family history are some of the main risk factors for breast cancer. "Another limitation is that sleep timing preference (chronotype) is self-reported, and the investigation did not specifically recruit individuals with different sleep patterns, such as night-shift workers", Burgess wrote in the comments of the study.

Morning people 'less likely to develop breast cancer'