Larks suffer from breast cancer less frequently than owls
Women who are more active in the first half of the day, less likely to develop breast cancer, according to a new study. Scientific work was presented at the annual conference of the National Institute of cancer research (National Cancer Research Institute) in Glasgow (Scotland).
British scientists analyzed information on more than 409 women to find the relationship of the risk of developing breast cancer stereotypes and habits associated with sleep.
Larks have the risk of this cancer was lower by 40% than the owls, according to the study.
It has also been shown that women who sleep more than the recommended 7-8 hours increase the risk of breast cancer is 20% for each additional hour of sleep.
We would like to go further and learn the mechanisms that cause these results. Our data obtained on the basis of issues rather preference of a morning or evening than with a real time of revival, said Rebecca Richmond (Rebecca Richmond), researcher, Integrative program of cancer epidemiology (Cancer Epidemiology Program Integrative) Cancer Research U. K at the University of Bristol.
In other words, it may not be the case when the change of lifestyle change the risk of cancer, the situation may be more difficult, she added.
At the same time, the protective effect of belonging to a lark corresponds to the findings of older studies.
Richmond noted that they found indications of a causal relationship between increased duration of sleep, fragmentation of sleep and breast cancer. With the chronotype (the typical rhythm of daily activity), a similar connection was not found.