: Miscarriages may increase during summer: Study #IndiaNEWS #Health Boston: According to research, the chances of miscarriages increase during summer as compared to any other weather condition. As

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Miscarriages may increase during summer: Study #IndiaNEWS #Health
Boston: According to research, the chances of miscarriages increase during summer as compared to any other weather condition.
As per the Boston University School of Public Health (BUSHP), Up to 30 percent of pregnancies end in miscarriage, defined as pregnancy loss before 20 weeks of pregnancy. As many as half of miscarriages are unexplained, and there are few known risk factors for these pregnancy losses, which can lead to post-traumatic stress disorder, depression, and anxiety.
The findings of the research were published in the journal Epidemiology.
The study investigated seasonal differences in miscarriage risk and found that pregnant people in North America had a 44 percent higher risk of an early miscarriage (within eight weeks of pregnancy) in the summer monthsparticularly in late Augustthan they did six months earlier in February. The risk of miscarriage during any week of pregnancy was 31 per cent higher in late August, compared to late February.
Geographically, the results showed that pregnant people in the South and Midwest, where summers are hottest, were more likely to experience this loss in late August and early September, respectively.
These results suggest that additional research is needed to understand the potential roles of extreme heat and other hot-weather environmental or lifestyle exposures in unexpected pregnancy loss.
Any time you see the seasonal variation in an outcome, it can give you hints about causes of that outcome, says study lead and corresponding author Dr Amelia Wesselink, research assistant professor of epidemiology at BUSPH. We found that miscarriage risk, particularly risk of early miscarriage before eight weeks of gestation, was highest in the summer. Now we need to dig into that more to understand what kinds of exposures are more prevalent in the summer, and which of these exposures could explain the increased risk of miscarriage.
For the study, Wesselink and colleagues analyzed survey data on pregnancy loss among pregnancy planners in the BUSPH-based Pregnancy Study Online (PRESTO), an ongoing NIH-funded study since 2013 that enrols women trying to conceive and follows them from preconception through six months after delivery. All PRESTO participants provide baseline information on sociodemographics, lifestyle, and medical histories, and for this study, the researchers focused on 6,104 participants who conceived within 12 months of enrolling. They provided information about pregnancy loss of any kind, the date of loss, and the weeks of gestation at the time of the loss.
The findings begin to fill a gap in information on seasonal patterns in miscarriage. Previous studies have relied on clinical or fertility data, both of which likely overlook miscarriages that occur early in gestation (and thus, outside of the hospital) and among couples not experiencing fertility challenges.

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