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New study reveals that night work increases the risk of miscarriage among pregnant women. The researchers explained that a disrupted circadian rhythm harms pregnancy. ( Buster Benson | Flickr )
A new study shows that pregnant women who work at least two night nights a week are at a higher risk of miscarriage the following week.
Danish researchers have found that women who work at night are exposed to a light that disrupts their circadian rhythm and decreases the release of melatonin, which is important for a successful pregnancy because it preserves the placenta.
However, other experts reject the findings of the study because they "are not powerful enough for people to think that they have to change their way of life".
Night Shift is linked to miscarriages
The team of researchers badyzed the outcome of pregnancy among 22,744 public servants, most of whom worked in hospitals in Denmark.
They compared the records of these workers with those of the Danish birth registry, which provided researchers with information on pregnancies that led to births, as well as the Danish National Register of Patients, which provided information on miscarriages. .
The study found that 740 women had a miscarriage of 10,047 women who worked nights from the third week to the 21st week of pregnancy.
Meanwhile, out of 12,697 women who did not work at night, 1,149 women had a miscarriage.
Taking into account the mother's age, body mbad index, smoking habits, number of previous births, socioeconomic status and previous miscarriages, the study found that to work two or more evenings in a single week between the 8th and 22nd week pregnancy was linked to a 32% increase in the risk of miscarriage the following week.
Pregnant women who worked at least 26 quarts of graveyard between week 4 and week 22 were more than twice as likely to have a miscarriage as those who did not work at night. This discovery was based on eight women, researchers said.
What are the impacts of this study?
The above study is based on observational research, which means that it does not establish the cause. Other experts believe that nothing proves that night work causes miscarriages. In addition, data on miscarriages were incomplete, the researchers said.
"This was not a randomized trial.With something like that, there are so many other confounding factors," said Dr. Zev Williams, who works at the New York-Presbyterian / Columbia Medical Center. University Irving.
This means that there must be other factors that have affected the health of night workers and that the study did not consider these factors.
Williams said the results of the data are not enough to convince pregnant women to change their lifestyle. He explained that in some cases the risk was so low and that preventing pregnant women from working at night would not significantly reduce the number of miscarriages.
Nevertheless, the results of the study are useful for the 14% of women in Europe who work night shifts every day.
Dr. Luise Molenberg Begtrup, lead author of the Danish study and researcher at the Department of Occupational Medicine and Environmental Medicine, Bispebjerg and Copenhagen's Frederiksberg Hospital, said the results of this study could have implications for national regulations on occupational health.
The details of the study are published in the journal BMJ.
Buster Benson | Flickr
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