These are the main causes of breast cancer

 Like pollution, chemicals, weight gain, and neglect, there is a strange reason. In the latest studies that dealt with breast cancer, a recent study indicated that women who prefer to wake up early every day are less likely to develop breast cancer than others.

In the study, published in the British Journal of Medicine, researchers say that previous studies have linked irregular sleep or getting too much rest, and an increased risk of breast cancer, but not many studies have previously focused on how the timing of waking up affects on a specified time.

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To conduct the current study, the researchers analyzed genetic variants associated with three sleep characteristics, namely its duration and insomnia, even if the participants in the study were people who preferred to wake up early or late. The researchers examined data on more than 400 women who participated in two studies in Britain, one of which extracted vital data and the other focused on breast cancer.

Examination of the bio-data study concluded that out of every 100 women who preferred to wake up early, the incidence of breast cancer decreased compared to others, but the study did not show a clear relationship between breast cancer and the duration of sleep per day nor insomnia.

Also, in the study that focused on breast cancer, the odds of early risers developing the disease were also reduced. The study also showed a relationship between an increase in the number of hours of sleep more than the recommended rate, which is about seven or eight hours a night, and an increase in the risk of disease by 19% for each additional hour.

"The results are consistent with previous studies that have highlighted the relationship of night shift work to breast cancer," said lead study author Rebecca Richmond, a researcher at the University of Bristol in Britain.

She added, "One of the hypotheses that may explain this relationship is the "light at night" hypothesis, which talks about reducing exposure to light at night in the proportion of melatonin, which in turn affects several hormonal pathways and increases the risk of breast cancer."

But Richmond considered that women should not quickly change their sleep pattern based on this, as the causes of breast cancer are manifold, and added: “The main findings that we concluded depended on women’s preference for the morning or evening hours and not on the exact time of awakening.” These results may also differ for other ethnic groups.