Sunday, 20 January, 2019


Early risers less likely to develop breast cancer, new study reveals

Reham Afandi Reham Afandi
Patty Aguilar | 09 November, 2018, 10:00

Researchers have found that women who prefer to get up and go to be early have a 40 to 48 per cent lower risk of breast cancer than those whose body clock leads them to feel drowsy in the morning and most energetic in the evening.

Scientists also found a higher breast cancer risk in women who sleep longer than eight hours at night.

"In other words, it may not be the case that changing your habits changes your risk of breast cancer; it may be more complex than that", she noted.

Dr Richmond said further research is required to "investigate the mechanism underlying the effects of different sleep characteristics on the risk of developing breast cancer".

The 2018 NCRI Cancer Conference takes place from November 4 to 6 in Glasgow, UK.

It said in a statement that the breast cancer awareness week was observed around the world in the month of October, as an annual global campaign organised by major breast cancer charities to increase awareness of the disease and to raise funds for research into its cause, prevention, diagnosis, treatment and cure.

Richmond's team also analyzed genetic variants linked to whether someone is a morning or night personin more than 220,000 women to find out if these could help provide a causal link to breast cancer.

Researchers looked at the DNA from a total of 410,000 women, based on whether they were lark or owl types.

The consortium has the largest collection of genetic data on women with breast cancer obtained so far.

The study used a genetic method known as Mendelian randomization.

Dr Emma Pennery, of the Breast Cancer Care charity, said: 'Changing your sleeping habits is not as easily done as other proven risk-reducing choices, as they're often part and parcel with jobs, parenting or other health conditions'.

Careem, one of the region's leading technology organisations, launched a breast cancer awareness campaign in partnership with the Qatar Cancer Society (QCS) last October. The World Health Organization already says disruption to people's body clocks because of shift work is probably linked to cancer risk.

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

"Sleep is likely to be an important risk factor for breast cancer", she said.

Similar studies have revealed a role for sleep preferences and mental health, including schizophrenia risk.

Age and family history are some of the main risk factors for breast cancer.

"In terms of the implications of the research, it supports existing evidence that sleep patterns influence cancer risk, but it remains unclear how individual preferences for early or late rising interact with actual sleep behaviours", Moorthie wrote in an email.

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