Early waking women may have a lower risk of developing breast cancer, according to a study at the National Cancer Institute (NRCI) conference in Glasgow.
A team of researchers from the University of Bristol, England, studied the biological rhythm of thousands of women, concluding that women genetically programmed to get up early are less prone to this type of cancer.
All humans have a biological clock that determines how the body works for 24 hours, the so-called circadian rhythm. This clock it affects the way you sleep, your daily sleep, your mood, even the risk of heart attack.
Using the method of mendal randomization (which calculates whether genetic variants can lead to the development of a disease), researchers analyzed DNA samples from thousands of women, referring to a British gene bank (Biobank) and the Cancer Association BCAC consortium in the original ).
The results showed that people who were genetically engineered to get up early are less likely to have breast cancer.
The findings are very important because sleep is easily modified, " said Rebecca Richmond, one of the study's researchers, BBC.
But Rebecca Richmond admits it's not that simple and it's too early to give advice, as no scientific conclusions can be found from this study.
We still need to understand why people who wake up later have a higher risk of cancer ", he said.
The World Health Organization had already warned of the danger of changing people's biological clock due to work shifts, where people get used to waking up and going to bed late in the morning, possibly linked to the risk of cancer.
The results found increase the number of indications of the possible relationship between genetics and the time we sleep with the risk of breast cancer. However, further research is needed to deepen this relationship " said Richard Berks, a member of the Breast Cancer Research team.
The results of the study were published in bioRxiv, But they still lack scientific revisions.