A group of U.S. researchers found that workaholics and women who often lift heavy loads have lower chances of getting pregnant than their more moderate peers.
The study involved more than 1,700 female nurses that were allegedly trying to have a baby. Of those nurses, 16 percent had no success in their endeavor within a year, while 5 percent failed to conceive after 24 months.
Scientists found that nurses who worked more than 40 hours per week needed 20 percent more time to conceive than their peers that worked only 21 to 40 hours. But those nurses that worked less but routinely lifted 25-pound loads for more than once a day also struggled to get pregnant. They needed 50 percent more time to conceive than other women, the study showed.
Audrey Gaskins, lead author of the study and researcher at Harvard T.H. Chan School of Public Health, explained that women who work hard physically or stay at work longer hours find it harder to get pregnant.
Usually, healthy people can conceive in maximum six months, unless partners are old or have fertility issues due to medication, smoking, substance abuse, or medical procedures.
For their research, scientists used data on nurses and their health from a national survey assessing their health between 2010 and 2014. About 50 percent of nurses were 33 years old, nearly 45 percent had weight problems, and more than 20 percent were smokers or former smokers.
Most of nurses worked either in day shifts or night shifts. Only 15 percent rotated their shifts from time to time. More than 33 percent said they had to stand for at least eight hours a day, while 40 percent said they had to lift heavy equipment or supplies several times a day.
Researchers noted that night shifts didn’t affect women’s ability of getting pregnant. The study’s results were adjusted for other risk factors such as irregular menstruation which can also affect female fertility. Nevertheless, the results remained consistent and women who lifted or moved around heavy loads needed 33 percent more time to have a baby than their peers who did not.
Additionally, if women were overweight or obese and also lifted heavy loads their risk of infertility was even higher. Researchers concluded that some working conditions may influence women’s fertility, though they didn’t find a cause-and-effect link.
Courtney Lynch from the Ohio State University in Columbus has a different theory. She believes that workaholics and those who come home exhausted from all that heavy lifting may find it hard to conceive because they simply have rare sexual intercourse.
Image Source: Google Plus