If you get up early, the risk of breast cancer may be reduced.

The the women who likes in the beginning are less inclined to to develop breast cancer, suggests a new study. British researchers analyzed two databases of more than 409,000 women to investigate the relationship between sleep patterns and breast cancer risk.

Compared to night birds, women who they got up early they had a 40 percent lower risk breast cancer, found the study.

Data also showed that women who slept longer than the recommended seven to eight hours per night had a higher risk of 20% breast cancer for each additional hour they slept.

"We would like to do more work to study the mechanisms underlying these results, because the estimates obtained are based on preference issues in the morning or evening, rather than whether people would get up sooner or later." said Rebecca Richmond, a researcher at Cancer Research UK's comprehensive cancer epidemiology program, at the University of Bristol.

"In other words, changing the habit may not change the risk of breast cancer, it may be a more complex problem," did he declare.

"However, the findings of a protective effect of morning preference on breast cancer risk in our study are consistent with previous research …," noted Richmond.

"We also found evidence of a causal effect of longer sleep duration and sleep fragmentation on breast cancer," he added.

The study was presented Tuesday at the annual cancer conference of the National Cancer Research Institute (NCRI) in the UK, Glasgow, Scotland.

The study did not demonstrate a causal link between sleep patterns and the risk of breast cancer.

"These are interesting discoveries that offer more evidence on how the clock of our body and our natural sleep preferences are involved at the beginning of the breast cancerCliona Clare Kirwan, a member of the NCRI's Breast Clinical Study Group, Kirwan did not participate in the survey.

"We already know that night shift work is associated with poorer mental and physical health, and this study offers more evidence suggesting that sleep disorders may play a role in cancer development," Kirwan said in a statement. communicated. press of the meeting.

The surveys presented at the meetings are considered preliminary until they are published in a peer-reviewed journal.

In this note: