The women who love early they are less prone develop breast cancer, proposes a new study. British researchers analyzed two data banks involving more than 409,000 women to explore the relationship between sleep and breast cancer.
Compared with nightmares, women who are They got up early they had a 40% lower risk breast cancer, found the studio.
Data also showed that women who slept more than seven to eight hours of recommended night vision had a 20 percent higher risk of breast cancer for every extra hour they slept.
"We would like more to work on exploring the mechanisms that are the basis of these results, given that estimates are based on preference questions in the morning or evening, rather than actually getting people up early or later," said Rebecca Richmond, a researcher at A comprehensive cancer epidemiology program in Cancer Research UK research at the University of Bristol.
"In other words, changing habits do not change the risk of breast cancer, this could be a more complex issue," he said.
"However, the finding of the protective effect of morning preference for the risk of breast cancer in our study is in line with previous research …," Richmond stressed.
"We also found some evidence of the causative effect of prolonged sleep and fragmentation of sleep on breast cancer," he added.
The study was presented at an annual cancer conference of the National Institute of Cancer Research (NCRI) in the UK, Glasgow, Scotland.
The study did not demonstrate a causal relationship between sleep patterns and the risk of breast cancer.
"They are interesting findings that provide more evidence of how our initial watch and our natural barriers are involved at the beginning breast cancer"Cliona Clare Kirvan, a member of the NCRI Clinical Breast Cancer Study, did not participate in the investigation.
"We already know that night work is associated with poor mental and physical health, and this study offers more evidence to suggest that disturbed sleep patterns can play a role in cancer development," said Kirwan in a statement. press meeting.
Research presented at meetings is considered preliminary until it is published in the journal.