One in 100 women considered daytime breast cancer, compared to two in 100 who identified themselves as nocturnal. The risks of cancer associated with the body's clock and a person's sleep patterns have been reported in other research in Great Britain, in order to explore the traits of sleep, in addition to genetic factors.
The informed preferences for the morning and night were recorded in the study with over 180,000 women, in a study conducted by Dr. Rebecca Richmond, researcher of the Integrated Program of Epidemiology of Cancer and of the Epidemiology Unit of the University of Bristol , and were presented at the Cancer Conference of the National Cancer Research Institute in Glasgow.
Early risers with less risk of breast cancer.
The Richmond team also analyzed genetic variants related to the fact that someone was diurnal or nocturnal in more than 220,000 women in order to establish whether this could provide a causal link to breast cancer.
It has been shown that women whose genes make them more prone to becoming early risers were less likely to develop breast cancer by up to 48%, as demonstrated by the 220,000 participants in the study.
Even women who reported sleeping more than 7 or 8 average hours per night had a slightly higher risk of breast cancer.
In the second analysis, about the sleep of 180 thousand participants, showed a similar trend in daytime women, with a 40% lower risk of breast cancer. The change occurred due to technical differences, according to Richmond.
According to the randomization analysis of the Mendelian team, women who reported sleeping more than 7 or 8 average hours per night had a slightly higher risk of breast cancer, 20% per hour more than sleep.
Let us take care of our health to avoid any suffering.
However, the team noted that many factors also intervene in the fact that a person develops breast cancer and that these figures do not represent an absolute risk. Furthermore, discoveries can not be applied in all populations, since most of the women included had European ancestors.