But is there any truth to the old wives’ tale? According to The New York Times, “severe morning sickness may indicate a higher likelihood that the baby will be a girl.” The Times looked at a study done by epidemiologists at the University of Washington, who compared 2,110 pregnant women who were hospitalized with morning sickness in the beginning of their pregnancies to 9,783 women who didn’t get severely ill. The women with morning sickness were more likely to deliver a girl, and those who were so sick they were hospitalized for three days or more were most likely to be pregnant with a daughter, with an 80 percent chance.
Other studies have come to the same conclusion, hypothesizing that hormones produced by female fetuses could be the reason those expectant moms are getting sick.
High-maintenance, even in the womb.
This article originally appeared on InStyle U.S.